Find the Roots (Zeros) 2x^4+2x^3+2x^2+15x-9

$2 x^{4} + 2 x^{3} + 2 x^{2} + 15 x - 9$

Step 1

Set $2 x^{4} + 2 x^{3} + 2 x^{2} + 15 x - 9$ equal to $0$ .

$2 x^{4} + 2 x^{3} + 2 x^{2} + 15 x - 9 = 0$

Step 2

Graph each side of the equation. The solution is the x-value of the point of intersection.

$x \approx - 2.32111518, 0.53163097$

Step 3