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Popular >

expand (7c-2)^2

Solution

expand

(7 c - 2)^{2}

Solution

49 c^{2} - 28 c + 4

Solution steps

(7 c - 2)^{2}

Apply Perfect Square Formula:

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

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

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

Simplify

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

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

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Frequently Asked Questions (FAQ)

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