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Popular >

expand (20-x)^2

Solution

expand

(20 - x)^{2}

Solution

400 - 40 x + x^{2}

Solution steps

(20 - x)^{2}

Apply Perfect Square Formula:

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

(20 - x)^{2} = 2 0^{2} - 2 \cdot 20 x + x^{2}

= 2 0^{2} - 2 \cdot 20 x + x^{2}

Simplify

2 0^{2} - 2 \cdot 20 x + x^{2} : 400 - 40 x + x^{2}

= 400 - 40 x + x^{2}

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Frequently Asked Questions (FAQ)

What is expand (20-x)^2 ?
The solution to expand (20-x)^2 is 400-40x+x^2