Write in Standard Form 9a^3b^6(3a^3b^2+7a^2b^2)-(5a^4b^4)^2

$9 a^{3} b^{6} (3 a^{3} b^{2} + 7 a^{2} b^{2}) - {(5 a^{4} b^{4})}^{2}$

Step 1

To write a polynomial in standard form, simplify and then arrange the terms in descending order.

$a x^{2} + b x + c$

Step 2

Simplify each term.

Apply the distributive property.

$9 a^{3} b^{6} (3 a^{3} b^{2}) + 9 a^{3} b^{6} (7 a^{2} b^{2}) - {(5 a^{4} b^{4})}^{2}$

Multiply $a^{3}$ by $a^{3}$ by adding the exponents.

Move $a^{3}$ .

$9 (a^{3} a^{3}) b^{6} (3 b^{2}) + 9 a^{3} b^{6} (7 a^{2} b^{2}) - {(5 a^{4} b^{4})}^{2}$

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

$9 a^{3 + 3} b^{6} (3 b^{2}) + 9 a^{3} b^{6} (7 a^{2} b^{2}) - {(5 a^{4} b^{4})}^{2}$

Add $3$ and $3$ .

$9 a^{6} b^{6} (3 b^{2}) + 9 a^{3} b^{6} (7 a^{2} b^{2}) - {(5 a^{4} b^{4})}^{2}$

Multiply $a^{3}$ by $a^{2}$ by adding the exponents.

Move $a^{2}$ .

$9 a^{6} b^{6} (3 b^{2}) + 9 (a^{2} a^{3}) b^{6} (7 b^{2}) - {(5 a^{4} b^{4})}^{2}$

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

$9 a^{6} b^{6} (3 b^{2}) + 9 a^{2 + 3} b^{6} (7 b^{2}) - {(5 a^{4} b^{4})}^{2}$

Add $2$ and $3$ .

$9 a^{6} b^{6} (3 b^{2}) + 9 a^{5} b^{6} (7 b^{2}) - {(5 a^{4} b^{4})}^{2}$

Simplify each term.

Multiply $b^{6}$ by $b^{2}$ by adding the exponents.

Move $b^{2}$ .

$9 a^{6} (b^{2} b^{6}) \cdot 3 + 9 a^{5} b^{6} (7 b^{2}) - {(5 a^{4} b^{4})}^{2}$

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

$9 a^{6} b^{2 + 6} \cdot 3 + 9 a^{5} b^{6} (7 b^{2}) - {(5 a^{4} b^{4})}^{2}$

Add $2$ and $6$ .

$9 a^{6} b^{8} \cdot 3 + 9 a^{5} b^{6} (7 b^{2}) - {(5 a^{4} b^{4})}^{2}$

Multiply $3$ by $9$ .

$27 a^{6} b^{8} + 9 a^{5} b^{6} (7 b^{2}) - {(5 a^{4} b^{4})}^{2}$

Multiply $b^{6}$ by $b^{2}$ by adding the exponents.

Move $b^{2}$ .

$27 a^{6} b^{8} + 9 a^{5} (b^{2} b^{6}) \cdot 7 - {(5 a^{4} b^{4})}^{2}$

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

$27 a^{6} b^{8} + 9 a^{5} b^{2 + 6} \cdot 7 - {(5 a^{4} b^{4})}^{2}$

Add $2$ and $6$ .

$27 a^{6} b^{8} + 9 a^{5} b^{8} \cdot 7 - {(5 a^{4} b^{4})}^{2}$

Multiply $7$ by $9$ .

$27 a^{6} b^{8} + 63 a^{5} b^{8} - {(5 a^{4} b^{4})}^{2}$

Use the power rule ${(a b)}^{n} = a^{n} b^{n}$ to distribute the exponent.

Apply the product rule to $5 a^{4} b^{4}$ .

$27 a^{6} b^{8} + 63 a^{5} b^{8} - ({(5 a^{4})}^{2} {(b^{4})}^{2})$

Apply the product rule to $5 a^{4}$ .

$27 a^{6} b^{8} + 63 a^{5} b^{8} - (5^{2} {(a^{4})}^{2} {(b^{4})}^{2})$

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

$27 a^{6} b^{8} + 63 a^{5} b^{8} - (25 {(a^{4})}^{2} {(b^{4})}^{2})$

Multiply the exponents in ${(a^{4})}^{2}$ .

Apply the power rule and multiply exponents, ${(a^{m})}^{n} = a^{m n}$ .

$27 a^{6} b^{8} + 63 a^{5} b^{8} - (25 a^{4 \cdot 2} {(b^{4})}^{2})$

Multiply $4$ by $2$ .

$27 a^{6} b^{8} + 63 a^{5} b^{8} - (25 a^{8} {(b^{4})}^{2})$

Multiply the exponents in ${(b^{4})}^{2}$ .

Apply the power rule and multiply exponents, ${(a^{m})}^{n} = a^{m n}$ .

$27 a^{6} b^{8} + 63 a^{5} b^{8} - (25 a^{8} b^{4 \cdot 2})$

Multiply $4$ by $2$ .

$27 a^{6} b^{8} + 63 a^{5} b^{8} - (25 a^{8} b^{8})$

Multiply $25$ by $- 1$ .

$27 a^{6} b^{8} + 63 a^{5} b^{8} - 25 a^{8} b^{8}$

Step 3

Simplify the expression.

Move $63 a^{5} b^{8}$ .

$27 a^{6} b^{8} - 25 a^{8} b^{8} + 63 a^{5} b^{8}$

Reorder $27 a^{6} b^{8}$ and $- 25 a^{8} b^{8}$ .

$- 25 a^{8} b^{8} + 27 a^{6} b^{8} + 63 a^{5} b^{8}$

Write in Standard Form 9a^3b^6(3a^3b^2+7a^2b^2)-(5a^4b^4)^2

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