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Popular >

expand (2a+7)^2

Solution

expand

(2 a + 7)^{2}

Solution

4 a^{2} + 28 a + 49

Solution steps

(2 a + 7)^{2}

Apply Perfect Square Formula:

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

(2 a + 7)^{2} = (2 a)^{2} + 2 \cdot 2 a \cdot 7 + 7^{2}

= (2 a)^{2} + 2 \cdot 2 a \cdot 7 + 7^{2}

Simplify

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

= 4 a^{2} + 28 a + 49

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Frequently Asked Questions (FAQ)

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