Solve 2*(-7)^2-sqrt{(-4)^3+785}*(-3)-9^6=

$$2 \cdot ( - 7 ) ^ { 2 } - \sqrt { ( - 4 ) ^ { 3 } + 785 } \cdot ( - 3 ) - 9 ^ { 6 } =$$

Evaluate

$$3\sqrt{721}-531343\approx -531262.445670507$$

Solution Steps

Calculate -7 to the power of 2 and get 49.

$$2\times 49-\sqrt{\left(-4\right)^{3}+785}\left(-3\right)-9^{6}$$

Multiply 2 and 49 to get 98.

$$98-\sqrt{\left(-4\right)^{3}+785}\left(-3\right)-9^{6}$$

Calculate -4 to the power of 3 and get -64.

$$98-\sqrt{-64+785}\left(-3\right)-9^{6}$$

Add -64 and 785 to get 721.

$$98-\sqrt{721}\left(-3\right)-9^{6}$$

Calculate 9 to the power of 6 and get 531441.

$$98-\sqrt{721}\left(-3\right)-531441$$

Multiply -1 and -3 to get 3.

$$98+3\sqrt{721}-531441$$

Subtract 531441 from 98 to get -531343.

$$-531343+3\sqrt{721}$$