x= 3, and x =-3
1) For the equation below, since it is an incomplete quadratic equation we can solve it in a simpler way
10x²-56=88-6x²
10x²+6x²-56=88-6x²+6x²
16x²-56=88
16x²-56+56=88+56
16x²=144 dividing both sides by 16
x² =9
x = +-√9
x= 3, and x =-3