What is (sqrt(a)+9)^2 ?

The solution to (sqrt(a)+9)^2 is a+18sqrt(a)+81

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simplify (sqrt(a)+9)^2

simplify

(a + 9)^{2}

a + 18 a + 81

Solution steps

(a + 9)^{2}

Apply Perfect Square Formula:

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

(a + 9)^{2} = (a)^{2} + 2 a \cdot 9 + 9^{2}

= (a)^{2} + 2 a \cdot 9 + 9^{2}

(a)^{2} = a

2 a \cdot 9 = 18 a

9^{2} = 81

= a + 18 a + 81

(3 x - 1) 3

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(x^{4} + 2 x) sin (2 x)

y (x^{2} + 2 y^{2}) d y

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