What are the x-solutions for the equation below mark all that apply 15x2-56 equals 88 6x2?

To solve the equation (15x^2 - 56 = 88 + 6x^2), first, rearrange it to (15x^2 - 6x^2 - 56 - 88 = 0), which simplifies to (9x^2 - 144 = 0). This further simplifies to (9x^2 = 144), so (x^2 = 16). Therefore, the solutions for (x) are (x = 4) and (x = -4).