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Popular >

expand (2-7x)^2

Solution

expand

(2 - 7 x)^{2}

Solution

4 - 28 x + 49 x^{2}

Solution steps

(2 - 7 x)^{2}

Apply Perfect Square Formula:

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

(2 - 7 x)^{2} = 2^{2} - 2 \cdot 2 \cdot 7 x + (7 x)^{2}

= 2^{2} - 2 \cdot 2 \cdot 7 x + (7 x)^{2}

Simplify

2^{2} - 2 \cdot 2 \cdot 7 x + (7 x)^{2} : 4 - 28 x + 49 x^{2}

= 4 - 28 x + 49 x^{2}

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Frequently Asked Questions (FAQ)

What is expand (2-7x)^2 ?
The solution to expand (2-7x)^2 is 4-28x+49x^2