Solve 2(-3)^3+9(-3)^2-6(-3)-15=7

$$2 ( - 3 ) ^ { 3 } + 9 ( - 3 ) ^ { 2 } - 6 ( - 3 ) - 15 = 7$$

Verify

Solution Steps

Calculate -3 to the power of 3 and get -27.

$$2\left(-27\right)+9\left(-3\right)^{2}-6\left(-3\right)-15=7$$

Multiply 2 and -27 to get -54.

$$-54+9\left(-3\right)^{2}-6\left(-3\right)-15=7$$

Calculate -3 to the power of 2 and get 9.

$$-54+9\times 9-6\left(-3\right)-15=7$$

Multiply 9 and 9 to get 81.

$$-54+81-6\left(-3\right)-15=7$$

Add -54 and 81 to get 27.

$$27-6\left(-3\right)-15=7$$

Multiply 6 and -3 to get -18.

$$27-\left(-18\right)-15=7$$

The opposite of -18 is 18.

$$27+18-15=7$$

Add 27 and 18 to get 45.

$$45-15=7$$

Subtract 15 from 45 to get 30.

$$30=7$$

Compare 30 and 7.

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