Moriah R.

asked • 03/23/13# solve the function

(fx)=3√x+1 find f(-9)

## 3 Answers By Expert Tutors

Paul O. answered • 03/25/13

Mathematics is Fun - and Easier Than Most People Think!

Cube root means: what number multiplied by itself 3 times, will give you the number under the radical.

In this case, you start with the cube root of (-8) after you plug in (-2) into the original equation.

The cube root of (-8) = -2

To check your answer: multiply -2 times itself 3 times.

(-2) (-2) = 4

4 (-2) = -8

Nataliya D. answered • 03/23/13

Patient and effective tutor for your most difficult subject.

f(-9) = ^3√(-9 +1) = ^3√(-8) = **-2 **

the answer is either 9i +1 or 3x(81/2 )i

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Nataliya D.

Hi,

Is 1 under the radical?

03/23/13