Solve math problem

Question

x²-3x=28

plz solve

Answer 1

x^2 - 3x = 28

x^2 - 3x - 28 = 0

factor left side. what two numbers add up to -3 and who product is 28: -7 and 4.

(x - 7)(x+ 4) = 0

x -7 = 0 or x + 4 = 0

x = 7 or x = -4