Solve the equations.

a) [[$ 2x^2 - x^2 = 100 $]]

Answer: [[$ x = $]] ±

b) [[$ 5x^2 - x^2 = 100 $]]

Answer: [[$ x = $]] ±

c) [[$ 12x^2 - 5x^2 = 112 $]]

Answer: [[$ x = $]] ±

Take a picture of your solution and return it to the submission folder.