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Popular >

expand (y-9)^2

Solution

expand

(y - 9)^{2}

Solution

y^{2} - 18 y + 81

Solution steps

(y - 9)^{2}

Apply Perfect Square Formula:

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

(y - 9)^{2} = y^{2} - 2 y \cdot 9 + 9^{2}

= y^{2} - 2 y \cdot 9 + 9^{2}

Simplify

y^{2} - 2 y \cdot 9 + 9^{2} : y^{2} - 18 y + 81

= y^{2} - 18 y + 81

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Frequently Asked Questions (FAQ)

What is expand (y-9)^2 ?
The solution to expand (y-9)^2 is y^2-18y+81