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Popular >

simplify sqrt(81x^2+81)

Solution

simplify

81 x^{2} + 81

Solution

9 x^{2} + 1

Solution steps

81 x^{2} + 81

Factor out common term

81 : 81 (x^{2} + 1)

= 81 (x^{2} + 1)

Apply radical rule:

ab = a b,

assuming

a \geq 0, b \geq 0

81 (x^{2} + 1) = 81 x^{2} + 1

= 81 x^{2} + 1

81 = 9

= 9 x^{2} + 1

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Frequently Asked Questions (FAQ)

What is sqrt(81x^2+81) ?
The solution to sqrt(81x^2+81) is 9sqrt(x^2+1)