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Popular >

expand (5x-7)^2

Solution

expand

(5 x - 7)^{2}

Solution

25 x^{2} - 70 x + 49

Solution steps

(5 x - 7)^{2}

Apply Perfect Square Formula:

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

(5 x - 7)^{2} = (5 x)^{2} - 2 \cdot 5 x \cdot 7 + 7^{2}

= (5 x)^{2} - 2 \cdot 5 x \cdot 7 + 7^{2}

Simplify

(5 x)^{2} - 2 \cdot 5 x \cdot 7 + 7^{2} : 25 x^{2} - 70 x + 49

= 25 x^{2} - 70 x + 49

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Frequently Asked Questions (FAQ)

What is expand (5x-7)^2 ?
The solution to expand (5x-7)^2 is 25x^2-70x+49