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Popular >

expand (k-1)^2

Solution

expand

(k - 1)^{2}

Solution

k^{2} - 2 k + 1

Solution steps

(k - 1)^{2}

Apply Perfect Square Formula:

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

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

= k^{2} - 2 k \cdot 1 + 1^{2}

Simplify

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

= k^{2} - 2 k + 1

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Frequently Asked Questions (FAQ)

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