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Popular >

expand (7-2x)^2

Solution

expand

(7 - 2 x)^{2}

Solution

49 - 28 x + 4 x^{2}

Solution steps

(7 - 2 x)^{2}

Apply Perfect Square Formula:

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

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

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

Simplify

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

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

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Frequently Asked Questions (FAQ)

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