2x²+7x+2=0 memakai rumus abc

2x² + 7x + 2 = 0

x1 = (-7 + √(49 - (4 . 2 . 2))) / 2 . 2
x1 = (-7 + √(49 - 16)) / 4
x1 = (-7 + √33) / 4


x2 = (-7 - √(49 - (4 . 2 . 2))) / 2 . 2
x2 = (-7 - √(49 - 16)) / 4
x2 = (-7 - √33) / 4