Question

Akar persamaan 2xkuadrat + 3x - 7 = 0 ....

Answer 1

2x²+3x-7 = 0
rumus abc
x1,2 = -b +/- √b²-4ac : 2a
x1,2 = -3+/- √3²-4.2.-7 :2.2
x1,2 = -3 +/- √9+56 :4
x1,2 = -3 +/- √65 :4

x1 = -3/4 + √65
x2 = -3/4 -√65

Answer 2

2X^2 + 3x - 7 = 0
b2 - 4ac = 3^2 - 4(2)(-7) = 9 - (-56) = 65