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Popular >

expand (y^2-1)^2

Solution

expand

(y^{2} - 1)^{2}

Solution

y^{4} - 2 y^{2} + 1

Solution steps

(y^{2} - 1)^{2}

Apply Perfect Square Formula:

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

(y^{2} - 1)^{2} = (y^{2})^{2} - 2 y^{2} \cdot 1 + 1^{2}

= (y^{2})^{2} - 2 y^{2} \cdot 1 + 1^{2}

Simplify

(y^{2})^{2} - 2 y^{2} \cdot 1 + 1^{2} : y^{4} - 2 y^{2} + 1

= y^{4} - 2 y^{2} + 1

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Frequently Asked Questions (FAQ)

What is expand (y^2-1)^2 ?
The solution to expand (y^2-1)^2 is y^4-2y^2+1