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Popular >

expand (-7x-3)^2

Solution

expand

(- 7 x - 3)^{2}

Solution

49 x^{2} + 42 x + 9

Solution steps

(- 7 x - 3)^{2}

Apply Perfect Square Formula:

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

(- 7 x - 3)^{2} = (- 7 x)^{2} - 2 (- 7 x) \cdot 3 + 3^{2}

= (- 7 x)^{2} - 2 (- 7 x) \cdot 3 + 3^{2}

Simplify

(- 7 x)^{2} - 2 (- 7 x) \cdot 3 + 3^{2} : 49 x^{2} + 42 x + 9

= 49 x^{2} + 42 x + 9

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Frequently Asked Questions (FAQ)

What is expand (-7x-3)^2 ?
The solution to expand (-7x-3)^2 is 49x^2+42x+9