Question

Himpunan penyelesaian persamaan kuadrat x pangkat 2 + 2x - 24 = 0 adalah...
Caranya ?

Answer 1

2+2x-24=0
=2+2x-24+24=0+24
=2+2x=24
=2-2+2x=24-4
=2x       =20
=2x/2     =20/2
=x          =10
himpunan penyelesaian (hp)={10}
 

Answer 2

X² +2x - 24 = 0
(x + 4)(x - 6) = 0
x + 4 = 0 atau x - 6 = 0
x = -4 atau x = 6

HP = {-4,6}