Final answer:
To solve the equation -16x² = -126, divide both sides by -16 to get x² = 7.875. Take the square root of both sides to find x, resulting in two solutions: x can be approximately 2.80 or approximately -2.80.
Step-by-step explanation:
To solve the equation -16x² = -126, we need to isolate x. Start by dividing both sides of the equation by -16 to get x² = 7.875. Then, take the square root of both sides to find x. Remember that taking the square root of a positive number will have two possible solutions: a positive and a negative value. So, x can be approximately 2.80 or approximately -2.80.