Pre-Algebra Examples

$7 \sqrt{40 x^{7}} - 2 \sqrt{8 x^{7}} + 4 \sqrt{50 x^{7}}$

Step 1

Simplify each term.

Tap for more steps...

Step 1.1

Rewrite $40 x^{7}$ as ${(2 x^{3})}^{2} \cdot (10 x)$ .

Tap for more steps...

Step 1.1.1

Factor $4$ out of $40$ .

$7 \sqrt{4 (10) x^{7}} - 2 \sqrt{8 x^{7}} + 4 \sqrt{50 x^{7}}$

Step 1.1.2

Rewrite $4$ as $2^{2}$ .

$7 \sqrt{2^{2} \cdot 10 x^{7}} - 2 \sqrt{8 x^{7}} + 4 \sqrt{50 x^{7}}$

Step 1.1.3

Factor out $x^{6}$ .

$7 \sqrt{2^{2} \cdot 10 (x^{6} x)} - 2 \sqrt{8 x^{7}} + 4 \sqrt{50 x^{7}}$

Step 1.1.4

Rewrite $x^{6}$ as ${(x^{3})}^{2}$ .

$7 \sqrt{2^{2} \cdot 10 ({(x^{3})}^{2} x)} - 2 \sqrt{8 x^{7}} + 4 \sqrt{50 x^{7}}$

Step 1.1.5

Move $10$ .

$7 \sqrt{2^{2} {(x^{3})}^{2} \cdot 10 x} - 2 \sqrt{8 x^{7}} + 4 \sqrt{50 x^{7}}$

Step 1.1.6

Rewrite $2^{2} {(x^{3})}^{2}$ as ${(2 x^{3})}^{2}$ .

$7 \sqrt{{(2 x^{3})}^{2} \cdot 10 x} - 2 \sqrt{8 x^{7}} + 4 \sqrt{50 x^{7}}$

Step 1.1.7

Add parentheses.

$7 \sqrt{{(2 x^{3})}^{2} \cdot (10 x)} - 2 \sqrt{8 x^{7}} + 4 \sqrt{50 x^{7}}$

Step 1.2

Pull terms out from under the radical.

$7 (2 x^{3} \sqrt{10 x}) - 2 \sqrt{8 x^{7}} + 4 \sqrt{50 x^{7}}$

Step 1.3

Multiply $2$ by $7$ .

$14 (x^{3} \sqrt{10 x}) - 2 \sqrt{8 x^{7}} + 4 \sqrt{50 x^{7}}$

Step 1.4

Rewrite $8 x^{7}$ as ${(2 x^{3})}^{2} \cdot (2 x)$ .

Tap for more steps...

Step 1.4.1

Factor $4$ out of $8$ .

$14 x^{3} \sqrt{10 x} - 2 \sqrt{4 (2) x^{7}} + 4 \sqrt{50 x^{7}}$

Step 1.4.2

Rewrite $4$ as $2^{2}$ .

$14 x^{3} \sqrt{10 x} - 2 \sqrt{2^{2} \cdot 2 x^{7}} + 4 \sqrt{50 x^{7}}$

Step 1.4.3

Factor out $x^{6}$ .

$14 x^{3} \sqrt{10 x} - 2 \sqrt{2^{2} \cdot 2 (x^{6} x)} + 4 \sqrt{50 x^{7}}$

Step 1.4.4

Rewrite $x^{6}$ as ${(x^{3})}^{2}$ .

$14 x^{3} \sqrt{10 x} - 2 \sqrt{2^{2} \cdot 2 ({(x^{3})}^{2} x)} + 4 \sqrt{50 x^{7}}$

Step 1.4.5

Move $2$ .

$14 x^{3} \sqrt{10 x} - 2 \sqrt{2^{2} {(x^{3})}^{2} \cdot 2 x} + 4 \sqrt{50 x^{7}}$

Step 1.4.6

Rewrite $2^{2} {(x^{3})}^{2}$ as ${(2 x^{3})}^{2}$ .

$14 x^{3} \sqrt{10 x} - 2 \sqrt{{(2 x^{3})}^{2} \cdot 2 x} + 4 \sqrt{50 x^{7}}$

Step 1.4.7

Add parentheses.

$14 x^{3} \sqrt{10 x} - 2 \sqrt{{(2 x^{3})}^{2} \cdot (2 x)} + 4 \sqrt{50 x^{7}}$

Step 1.5

Pull terms out from under the radical.

$14 x^{3} \sqrt{10 x} - 2 (2 x^{3} \sqrt{2 x}) + 4 \sqrt{50 x^{7}}$

Step 1.6

Multiply $2$ by $- 2$ .

$14 x^{3} \sqrt{10 x} - 4 (x^{3} \sqrt{2 x}) + 4 \sqrt{50 x^{7}}$

Step 1.7

Rewrite $50 x^{7}$ as ${(5 x^{3})}^{2} \cdot (2 x)$ .

Tap for more steps...

Step 1.7.1

Factor $25$ out of $50$ .

$14 x^{3} \sqrt{10 x} - 4 x^{3} \sqrt{2 x} + 4 \sqrt{25 (2) x^{7}}$

Step 1.7.2

Rewrite $25$ as $5^{2}$ .

$14 x^{3} \sqrt{10 x} - 4 x^{3} \sqrt{2 x} + 4 \sqrt{5^{2} \cdot 2 x^{7}}$

Step 1.7.3

Factor out $x^{6}$ .

$14 x^{3} \sqrt{10 x} - 4 x^{3} \sqrt{2 x} + 4 \sqrt{5^{2} \cdot 2 (x^{6} x)}$

Step 1.7.4

Rewrite $x^{6}$ as ${(x^{3})}^{2}$ .

$14 x^{3} \sqrt{10 x} - 4 x^{3} \sqrt{2 x} + 4 \sqrt{5^{2} \cdot 2 ({(x^{3})}^{2} x)}$

Step 1.7.5

Move $2$ .

$14 x^{3} \sqrt{10 x} - 4 x^{3} \sqrt{2 x} + 4 \sqrt{5^{2} {(x^{3})}^{2} \cdot 2 x}$

Step 1.7.6

Rewrite $5^{2} {(x^{3})}^{2}$ as ${(5 x^{3})}^{2}$ .

$14 x^{3} \sqrt{10 x} - 4 x^{3} \sqrt{2 x} + 4 \sqrt{{(5 x^{3})}^{2} \cdot 2 x}$

Step 1.7.7

Add parentheses.

$14 x^{3} \sqrt{10 x} - 4 x^{3} \sqrt{2 x} + 4 \sqrt{{(5 x^{3})}^{2} \cdot (2 x)}$

Step 1.8

Pull terms out from under the radical.

$14 x^{3} \sqrt{10 x} - 4 x^{3} \sqrt{2 x} + 4 (5 x^{3} \sqrt{2 x})$

Step 1.9

Multiply $5$ by $4$ .

$14 x^{3} \sqrt{10 x} - 4 x^{3} \sqrt{2 x} + 20 x^{3} \sqrt{2 x}$

Step 2

Add $- 4 x^{3} \sqrt{2 x}$ and $20 x^{3} \sqrt{2 x}$ .

$14 x^{3} \sqrt{10 x} + 16 x^{3} \sqrt{2 x}$