Solve (1.7)^4+0.4(1.7)^3-0.3(1.7)^2-18

$$( 1.7 ) ^ { 4 } + 0.4 ( 1.7 ) ^ { 3 } - 0.3 ( 1.7 ) ^ { 2 } - 18$$

Evaluate

$$-8.5497$$

Solution Steps

Calculate 1.7 to the power of 4 and get 8.3521.

$$8.3521+0.4\times 1.7^{3}-0.3\times 1.7^{2}-18$$

Calculate 1.7 to the power of 3 and get 4.913.

$$8.3521+0.4\times 4.913-0.3\times 1.7^{2}-18$$

Multiply 0.4 and 4.913 to get 1.9652.

$$8.3521+1.9652-0.3\times 1.7^{2}-18$$

Add 8.3521 and 1.9652 to get 10.3173.

$$10.3173-0.3\times 1.7^{2}-18$$

Calculate 1.7 to the power of 2 and get 2.89.

$$10.3173-0.3\times 2.89-18$$

Multiply 0.3 and 2.89 to get 0.867.

$$10.3173-0.867-18$$

Subtract 0.867 from 10.3173 to get 9.4503.

$$9.4503-18$$

Subtract 18 from 9.4503 to get -8.5497.

$$-8.5497$$

Factor

$$-8.5497$$