Basic Math Examples

${(a + 5)}^{5} - {(2 a + 3)}^{2}$

Step 1

Use the Binomial Theorem.

$a^{5} + 5 a^{4} \cdot 5 + 10 a^{3} \cdot 5^{2} + 10 a^{2} \cdot 5^{3} + 5 a \cdot 5^{4} + 5^{5} - {(2 a + 3)}^{2}$

Step 2

Simplify each term.

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Step 2.1

Multiply $5$ by $5$ .

$a^{5} + 25 a^{4} + 10 a^{3} \cdot 5^{2} + 10 a^{2} \cdot 5^{3} + 5 a \cdot 5^{4} + 5^{5} - {(2 a + 3)}^{2}$

Step 2.2

Raise $5$ to the power of $2$ .

$a^{5} + 25 a^{4} + 10 a^{3} \cdot 25 + 10 a^{2} \cdot 5^{3} + 5 a \cdot 5^{4} + 5^{5} - {(2 a + 3)}^{2}$

Step 2.3

Multiply $25$ by $10$ .

$a^{5} + 25 a^{4} + 250 a^{3} + 10 a^{2} \cdot 5^{3} + 5 a \cdot 5^{4} + 5^{5} - {(2 a + 3)}^{2}$

Step 2.4

Raise $5$ to the power of $3$ .

$a^{5} + 25 a^{4} + 250 a^{3} + 10 a^{2} \cdot 125 + 5 a \cdot 5^{4} + 5^{5} - {(2 a + 3)}^{2}$

Step 2.5

Multiply $125$ by $10$ .

$a^{5} + 25 a^{4} + 250 a^{3} + 1250 a^{2} + 5 a \cdot 5^{4} + 5^{5} - {(2 a + 3)}^{2}$

Step 2.6

Multiply $5$ by $5^{4}$ by adding the exponents.

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Step 2.6.1

Move $5^{4}$ .

$a^{5} + 25 a^{4} + 250 a^{3} + 1250 a^{2} + 5^{4} \cdot 5 a + 5^{5} - {(2 a + 3)}^{2}$

Step 2.6.2

Multiply $5^{4}$ by $5$ .

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Step 2.6.2.1

Raise $5$ to the power of $1$ .

$a^{5} + 25 a^{4} + 250 a^{3} + 1250 a^{2} + 5^{4} \cdot 5^{1} a + 5^{5} - {(2 a + 3)}^{2}$

Step 2.6.2.2

Use the power rule $a^{m} a^{n} = a^{m + n}$ to combine exponents.

$a^{5} + 25 a^{4} + 250 a^{3} + 1250 a^{2} + 5^{4 + 1} a + 5^{5} - {(2 a + 3)}^{2}$

Step 2.6.3

Add $4$ and $1$ .

$a^{5} + 25 a^{4} + 250 a^{3} + 1250 a^{2} + 5^{5} a + 5^{5} - {(2 a + 3)}^{2}$

Step 2.7

Raise $5$ to the power of $5$ .

$a^{5} + 25 a^{4} + 250 a^{3} + 1250 a^{2} + 3125 a + 5^{5} - {(2 a + 3)}^{2}$

Step 2.8

Raise $5$ to the power of $5$ .

$a^{5} + 25 a^{4} + 250 a^{3} + 1250 a^{2} + 3125 a + 3125 - {(2 a + 3)}^{2}$

Step 3

Rewrite ${(2 a + 3)}^{2}$ as $(2 a + 3) (2 a + 3)$ .

$a^{5} + 25 a^{4} + 250 a^{3} + 1250 a^{2} + 3125 a + 3125 - ((2 a + 3) (2 a + 3))$

Step 4

Expand $(2 a + 3) (2 a + 3)$ using the FOIL Method.

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Step 4.1

Apply the distributive property.

$a^{5} + 25 a^{4} + 250 a^{3} + 1250 a^{2} + 3125 a + 3125 - (2 a (2 a + 3) + 3 (2 a + 3))$

Step 4.2

Apply the distributive property.

$a^{5} + 25 a^{4} + 250 a^{3} + 1250 a^{2} + 3125 a + 3125 - (2 a (2 a) + 2 a \cdot 3 + 3 (2 a + 3))$

Step 4.3

Apply the distributive property.

$a^{5} + 25 a^{4} + 250 a^{3} + 1250 a^{2} + 3125 a + 3125 - (2 a (2 a) + 2 a \cdot 3 + 3 (2 a) + 3 \cdot 3)$

Step 5

Simplify and combine like terms.

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Step 5.1

Simplify each term.

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Step 5.1.1

Rewrite using the commutative property of multiplication.

$a^{5} + 25 a^{4} + 250 a^{3} + 1250 a^{2} + 3125 a + 3125 - (2 \cdot 2 a \cdot a + 2 a \cdot 3 + 3 (2 a) + 3 \cdot 3)$

Step 5.1.2

Multiply $a$ by $a$ by adding the exponents.

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Step 5.1.2.1

Move $a$ .

$a^{5} + 25 a^{4} + 250 a^{3} + 1250 a^{2} + 3125 a + 3125 - (2 \cdot 2 (a \cdot a) + 2 a \cdot 3 + 3 (2 a) + 3 \cdot 3)$

Step 5.1.2.2

Multiply $a$ by $a$ .

$a^{5} + 25 a^{4} + 250 a^{3} + 1250 a^{2} + 3125 a + 3125 - (2 \cdot 2 a^{2} + 2 a \cdot 3 + 3 (2 a) + 3 \cdot 3)$

Step 5.1.3

Multiply $2$ by $2$ .

$a^{5} + 25 a^{4} + 250 a^{3} + 1250 a^{2} + 3125 a + 3125 - (4 a^{2} + 2 a \cdot 3 + 3 (2 a) + 3 \cdot 3)$

Step 5.1.4

Multiply $3$ by $2$ .

$a^{5} + 25 a^{4} + 250 a^{3} + 1250 a^{2} + 3125 a + 3125 - (4 a^{2} + 6 a + 3 (2 a) + 3 \cdot 3)$

Step 5.1.5

Multiply $2$ by $3$ .

$a^{5} + 25 a^{4} + 250 a^{3} + 1250 a^{2} + 3125 a + 3125 - (4 a^{2} + 6 a + 6 a + 3 \cdot 3)$

Step 5.1.6

Multiply $3$ by $3$ .

$a^{5} + 25 a^{4} + 250 a^{3} + 1250 a^{2} + 3125 a + 3125 - (4 a^{2} + 6 a + 6 a + 9)$

Step 5.2

Add $6 a$ and $6 a$ .

$a^{5} + 25 a^{4} + 250 a^{3} + 1250 a^{2} + 3125 a + 3125 - (4 a^{2} + 12 a + 9)$

Step 6

Apply the distributive property.

$a^{5} + 25 a^{4} + 250 a^{3} + 1250 a^{2} + 3125 a + 3125 - (4 a^{2}) - (12 a) - 1 \cdot 9$

Step 7

Simplify.

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Step 7.1

Multiply $4$ by $- 1$ .

$a^{5} + 25 a^{4} + 250 a^{3} + 1250 a^{2} + 3125 a + 3125 - 4 a^{2} - (12 a) - 1 \cdot 9$

Step 7.2

Multiply $12$ by $- 1$ .

$a^{5} + 25 a^{4} + 250 a^{3} + 1250 a^{2} + 3125 a + 3125 - 4 a^{2} - 12 a - 1 \cdot 9$

Step 7.3

Multiply $- 1$ by $9$ .

$a^{5} + 25 a^{4} + 250 a^{3} + 1250 a^{2} + 3125 a + 3125 - 4 a^{2} - 12 a - 9$

Step 8

Subtract $4 a^{2}$ from $1250 a^{2}$ .

$a^{5} + 25 a^{4} + 250 a^{3} + 1246 a^{2} + 3125 a + 3125 - 12 a - 9$

Step 9

Subtract $12 a$ from $3125 a$ .

$a^{5} + 25 a^{4} + 250 a^{3} + 1246 a^{2} + 3113 a + 3125 - 9$

Step 10

Subtract $9$ from $3125$ .

$a^{5} + 25 a^{4} + 250 a^{3} + 1246 a^{2} + 3113 a + 3116$