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Popular >

expand (7+5a)^2

Solution

expand

(7 + 5 a)^{2}

Solution

49 + 70 a + 25 a^{2}

Solution steps

(7 + 5 a)^{2}

Apply Perfect Square Formula:

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

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

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

Simplify

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

= 49 + 70 a + 25 a^{2}

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Frequently Asked Questions (FAQ)

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