Chemistry Examples

$(2.55 - x) (2.55 - x)$

Step 1

Expand $(2.55 - x) (2.55 - x)$ using the FOIL Method.

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Step 1.1

Apply the distributive property.

$2.55 (2.55 - x) - x (2.55 - x)$

Step 1.2

Apply the distributive property.

$2.55 \cdot 2.55 + 2.55 (- x) - x (2.55 - x)$

Step 1.3

Apply the distributive property.

$2.55 \cdot 2.55 + 2.55 (- x) - x \cdot 2.55 - x (- x)$

Step 2

Simplify and combine like terms.

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Step 2.1

Simplify each term.

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Step 2.1.1

Multiply $2.55$ by $2.55$ .

$6.5025 + 2.55 (- x) - x \cdot 2.55 - x (- x)$

Step 2.1.2

Multiply $- 1$ by $2.55$ .

$6.5025 - 2.55 x - x \cdot 2.55 - x (- x)$

Step 2.1.3

Multiply $2.55$ by $- 1$ .

$6.5025 - 2.55 x - 2.55 x - x (- x)$

Step 2.1.4

Rewrite using the commutative property of multiplication.

$6.5025 - 2.55 x - 2.55 x - 1 \cdot - 1 x \cdot x$

Step 2.1.5

Multiply $x$ by $x$ by adding the exponents.

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Step 2.1.5.1

Move $x$ .

$6.5025 - 2.55 x - 2.55 x - 1 \cdot - 1 (x \cdot x)$

Step 2.1.5.2

Multiply $x$ by $x$ .

$6.5025 - 2.55 x - 2.55 x - 1 \cdot - 1 x^{2}$

Step 2.1.6

Multiply $- 1$ by $- 1$ .

$6.5025 - 2.55 x - 2.55 x + 1 x^{2}$

Step 2.1.7

Multiply $x^{2}$ by $1$ .

$6.5025 - 2.55 x - 2.55 x + x^{2}$

Step 2.2

Subtract $2.55 x$ from $- 2.55 x$ .

$6.5025 - 5.1 x + x^{2}$