selesaikan operasi hitung 2x²+3x+7=12

2x^2 + 3x + 7 = 12
2x^2 + 3x + 7 - 12 = 0
2x^2 + 3x - 5 = 0
(2x + 5) (x - 1) = 0

2x + 5 = 0
2x = -5
x = -5/2

Atau

x - 1 = 0
x = 1