Solve 0.2(0.4)^3+1.6(0.4)^2-2.3

$$0.2 ( 0.4 ) ^ { 3 } + 1.6 ( 0.4 ) ^ { 2 } - 2.3$$

Evaluate

$$-2.0312$$

Solution Steps

Calculate 0.4 to the power of 3 and get 0.064.

$$0.2\times 0.064+1.6\times 0.4^{2}-2.3$$

Multiply 0.2 and 0.064 to get 0.0128.

$$0.0128+1.6\times 0.4^{2}-2.3$$

Calculate 0.4 to the power of 2 and get 0.16.

$$0.0128+1.6\times 0.16-2.3$$

Multiply 1.6 and 0.16 to get 0.256.

$$0.0128+0.256-2.3$$

Add 0.0128 and 0.256 to get 0.2688.

$$0.2688-2.3$$

Subtract 2.3 from 0.2688 to get -2.0312.

$$-2.0312$$

Factor

$$-2.0312$$