Question

Solve 2x2 + 5x = 12

a) x= 3/2 and x = −4
b) x= 2 and x= -3
c) x=-6 and x= 5
d) x= 1/2 and x= 1/3

Answer 1

2x2+5x=12, 2x+5x=7x, 12+2=14, 7x/7=14/7, x=2