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Popular >

expand (a-1)^2-x^2

Solution

expand

(a - 1)^{2} - x^{2}

Solution

a^{2} - 2 a + 1 - x^{2}

Solution steps

(a - 1)^{2} - x^{2}

Apply Perfect Square Formula:

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

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

= a^{2} - 2 a \cdot 1 + 1^{2} - x^{2}

Simplify

a^{2} - 2 a \cdot 1 + 1^{2} : a^{2} - 2 a + 1

= a^{2} - 2 a + 1 - x^{2}

Popular Examples

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Frequently Asked Questions (FAQ)

What is expand (a-1)^2-x^2 ?
The solution to expand (a-1)^2-x^2 is a^2-2a+1-x^2