Solve 4-70div2*sqrt{81}-7^2

$$4-70 \div 2 \times \sqrt{ 81 } - { 7 }^{ 2 }$$

Evaluate

$$-360$$

Solution Steps

Divide 70 by 2 to get 35.

$$4-35\sqrt{81}-7^{2}$$

Calculate the square root of 81 and get 9.

$$4-35\times 9-7^{2}$$

Multiply 35 and 9 to get 315.

$$4-315-7^{2}$$

Subtract 315 from 4 to get -311.

$$-311-7^{2}$$

Calculate 7 to the power of 2 and get 49.

$$-311-49$$

Subtract 49 from -311 to get -360.

$$-360$$

Factor

$$-360$$