Algebra Examples

$\sqrt{49 {(x + 2 y)}^{10}}$

Step 1

Rewrite $49 {(x + 2 y)}^{10}$ as ${(7 {(x + 2 y)}^{5})}^{2}$ .

$\sqrt{{(7 {(x + 2 y)}^{5})}^{2}}$

Step 2

Pull terms out from under the radical.

$| 7 {(x + 2 y)}^{5} |$

Step 3

Use the Binomial Theorem.

$| 7 (x^{5} + 5 x^{4} (2 y) + 10 x^{3} {(2 y)}^{2} + 10 x^{2} {(2 y)}^{3} + 5 x {(2 y)}^{4} + {(2 y)}^{5}) |$

Step 4

Simplify each term.

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Step 4.1

Rewrite using the commutative property of multiplication.

$| 7 (x^{5} + 5 \cdot 2 x^{4} y + 10 x^{3} {(2 y)}^{2} + 10 x^{2} {(2 y)}^{3} + 5 x {(2 y)}^{4} + {(2 y)}^{5}) |$

Step 4.2

Multiply $5$ by $2$ .

$| 7 (x^{5} + 10 x^{4} y + 10 x^{3} {(2 y)}^{2} + 10 x^{2} {(2 y)}^{3} + 5 x {(2 y)}^{4} + {(2 y)}^{5}) |$

Step 4.3

Apply the product rule to $2 y$ .

$| 7 (x^{5} + 10 x^{4} y + 10 x^{3} (2^{2} y^{2}) + 10 x^{2} {(2 y)}^{3} + 5 x {(2 y)}^{4} + {(2 y)}^{5}) |$

Step 4.4

Rewrite using the commutative property of multiplication.

$| 7 (x^{5} + 10 x^{4} y + 10 \cdot 2^{2} x^{3} y^{2} + 10 x^{2} {(2 y)}^{3} + 5 x {(2 y)}^{4} + {(2 y)}^{5}) |$

Step 4.5

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

$| 7 (x^{5} + 10 x^{4} y + 10 \cdot 4 x^{3} y^{2} + 10 x^{2} {(2 y)}^{3} + 5 x {(2 y)}^{4} + {(2 y)}^{5}) |$

Step 4.6

Multiply $10$ by $4$ .

$| 7 (x^{5} + 10 x^{4} y + 40 x^{3} y^{2} + 10 x^{2} {(2 y)}^{3} + 5 x {(2 y)}^{4} + {(2 y)}^{5}) |$

Step 4.7

Apply the product rule to $2 y$ .

$| 7 (x^{5} + 10 x^{4} y + 40 x^{3} y^{2} + 10 x^{2} (2^{3} y^{3}) + 5 x {(2 y)}^{4} + {(2 y)}^{5}) |$

Step 4.8

Rewrite using the commutative property of multiplication.

$| 7 (x^{5} + 10 x^{4} y + 40 x^{3} y^{2} + 10 \cdot 2^{3} x^{2} y^{3} + 5 x {(2 y)}^{4} + {(2 y)}^{5}) |$

Step 4.9

Raise $2$ to the power of $3$ .

$| 7 (x^{5} + 10 x^{4} y + 40 x^{3} y^{2} + 10 \cdot 8 x^{2} y^{3} + 5 x {(2 y)}^{4} + {(2 y)}^{5}) |$

Step 4.10

Multiply $10$ by $8$ .

$| 7 (x^{5} + 10 x^{4} y + 40 x^{3} y^{2} + 80 x^{2} y^{3} + 5 x {(2 y)}^{4} + {(2 y)}^{5}) |$

Step 4.11

Apply the product rule to $2 y$ .

$| 7 (x^{5} + 10 x^{4} y + 40 x^{3} y^{2} + 80 x^{2} y^{3} + 5 x (2^{4} y^{4}) + {(2 y)}^{5}) |$

Step 4.12

Rewrite using the commutative property of multiplication.

$| 7 (x^{5} + 10 x^{4} y + 40 x^{3} y^{2} + 80 x^{2} y^{3} + 5 \cdot 2^{4} x y^{4} + {(2 y)}^{5}) |$

Step 4.13

Raise $2$ to the power of $4$ .

$| 7 (x^{5} + 10 x^{4} y + 40 x^{3} y^{2} + 80 x^{2} y^{3} + 5 \cdot 16 x y^{4} + {(2 y)}^{5}) |$

Step 4.14

Multiply $5$ by $16$ .

$| 7 (x^{5} + 10 x^{4} y + 40 x^{3} y^{2} + 80 x^{2} y^{3} + 80 x y^{4} + {(2 y)}^{5}) |$

Step 4.15

Apply the product rule to $2 y$ .

$| 7 (x^{5} + 10 x^{4} y + 40 x^{3} y^{2} + 80 x^{2} y^{3} + 80 x y^{4} + 2^{5} y^{5}) |$

Step 4.16

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

$| 7 (x^{5} + 10 x^{4} y + 40 x^{3} y^{2} + 80 x^{2} y^{3} + 80 x y^{4} + 32 y^{5}) |$

Step 5

Apply the distributive property.

$| 7 x^{5} + 7 (10 x^{4} y) + 7 (40 x^{3} y^{2}) + 7 (80 x^{2} y^{3}) + 7 (80 x y^{4}) + 7 (32 y^{5}) |$

Step 6

Simplify.

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Step 6.1

Multiply $10$ by $7$ .

$| 7 x^{5} + 70 (x^{4} y) + 7 (40 x^{3} y^{2}) + 7 (80 x^{2} y^{3}) + 7 (80 x y^{4}) + 7 (32 y^{5}) |$

Step 6.2

Multiply $40$ by $7$ .

$| 7 x^{5} + 70 (x^{4} y) + 280 (x^{3} y^{2}) + 7 (80 x^{2} y^{3}) + 7 (80 x y^{4}) + 7 (32 y^{5}) |$

Step 6.3

Multiply $80$ by $7$ .

$| 7 x^{5} + 70 (x^{4} y) + 280 (x^{3} y^{2}) + 560 (x^{2} y^{3}) + 7 (80 x y^{4}) + 7 (32 y^{5}) |$

Step 6.4

Multiply $80$ by $7$ .

$| 7 x^{5} + 70 (x^{4} y) + 280 (x^{3} y^{2}) + 560 (x^{2} y^{3}) + 560 (x y^{4}) + 7 (32 y^{5}) |$

Step 6.5

Multiply $32$ by $7$ .

$| 7 x^{5} + 70 (x^{4} y) + 280 (x^{3} y^{2}) + 560 (x^{2} y^{3}) + 560 (x y^{4}) + 224 y^{5} |$

Step 7

Remove parentheses.

$| 7 x^{5} + 70 x^{4} y + 280 x^{3} y^{2} + 560 x^{2} y^{3} + 560 x y^{4} + 224 y^{5} |$