Question

Solve using any method.

1. 2x^2+5x-3=0

2. -x^2+x+1=0

Answer 1

(2x-1)(x+3) = 0 --> 1/2 and -3

x^2 - x - 1 = 0

x = [1 +/- sqrt (1+4) ]/2

= 1/2 +/- (1/2) sqrt 5