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Popular >

expand (8a-9b)^2

Solution

expand

(8 a - 9 b)^{2}

Solution

64 a^{2} - 144 ab + 81 b^{2}

Solution steps

(8 a - 9 b)^{2}

Apply Perfect Square Formula:

(a - b)^{2} = a^{2} - 2 ab + b^{2}

(8 a - 9 b)^{2} = (8 a)^{2} - 2 \cdot 8 a \cdot 9 b + (9 b)^{2}

= (8 a)^{2} - 2 \cdot 8 a \cdot 9 b + (9 b)^{2}

Simplify

(8 a)^{2} - 2 \cdot 8 a \cdot 9 b + (9 b)^{2} : 64 a^{2} - 144 ab + 81 b^{2}

= 64 a^{2} - 144 ab + 81 b^{2}

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Frequently Asked Questions (FAQ)

What is expand (8a-9b)^2 ?
The solution to expand (8a-9b)^2 is 64a^2-144ab+81b^2