Question

Solve the following quadratic equation by factoring or Quadratic Formula.

x2 – 3x – 10.= 0
O{-2, 5}
O{-2, 10}
O{-5, 2}
O{-5, 4}

Answer 1

Answer is A I’m pretty sure

Answer 2

A.

Explanation:

x2 - 3x - 10. = 0

x2 + 2x - 5x - 10 = 0

(x2 + 2x) (-5x - 10) = 0

x (x + 2) - 5 (x + 2) = 0

(x - 5) (x + 2) = 0

x - 5 = 0 x + 2 = 0

x = 5 or x = - 2.