Question

Tentukan himpunan selesaian dari :
A) x^{2} – 64 =0
B) x^{2} – 6x – 16=0
C) 2 x^{2} – 7x + 3=0

Answer 1

X² - 64 = 0
( x + 8 ) ( x - 8 ) = 0

x = -8
x = 8

HP = { -8, 8 }
___________________________
x² - 6x - 16 = 0
( x - 8 ) ( x + 2 ) = 0

x = 8
x = -2

HP = { 8, -2 }
____________________________
2x² - 7x + 3 = 0
1/2 ( 2x - 6 ) ( 2x - 1 ) = 0
( x - 3 ) ( 2x - 1 ) = 0

x = 3
x = 1/2

HP = { 3, 1/2 }