Solve sqrt{-(1+2*-3^2)-1}

$$\sqrt{ -(1+2 \times - { 3 }^{ 2 } )-1 }$$

Evaluate

$$4$$

Solution Steps

Calculate 3 to the power of 2 and get 9.

$$\sqrt{-\left(1+2\left(-9\right)\right)-1}$$

Multiply 2 and -9 to get -18.

$$\sqrt{-\left(1-18\right)-1}$$

Subtract 18 from 1 to get -17.

$$\sqrt{-\left(-17\right)-1}$$

The opposite of -17 is 17.

$$\sqrt{17-1}$$

Subtract 1 from 17 to get 16.

$$\sqrt{16}$$

Calculate the square root of 16 and get 4.

$$4$$

Factor

$$2^{2}$$