Solve 2a^4-a^3-21a+a+1/2a^2sin-4

$$\frac { 2 a ^ { 4 } - a ^ { 3 } - 21 a + a + 1 } { 2 a ^ { 2 } \sin - 4 }$$

Evaluate

$$\frac{2a^{4}-a^{3}-20a+1}{2a^{2}-0.0697564737441253}$$

Short Solution Steps

Evaluate trigonometric functions in the problem

$$\frac{2 a ^ {4} - a ^ {3} - 21 a + a + 1}{2 a ^ {2} -0.0697564737441253}$$

Combine -21a and a to get -20a.

$$\frac{2a^{4}-a^{3}-20a+1}{2a^{2}-0.0697564737441253}$$

Expand

$$\frac{2a^{4}-a^{3}-20a+1}{2a^{2}-0.0697564737441253}$$

Short Solution Steps

Evaluate trigonometric functions in the problem

$$\frac{2 a ^ {4} - a ^ {3} - 21 a + a + 1}{2 a ^ {2} -0.0697564737441253}$$

Combine -21a and a to get -20a.

$$\frac{2a^{4}-a^{3}-20a+1}{2a^{2}-0.0697564737441253}$$