Question

Tentukan penyelesaian dr persamaan berikut dg pemfaktoran
a) x² - 9x = 0
b) 4x² - 3x -10 = 0
c) x² - 36 = 0
d) 12x² - 23x + 5 = 0
Please.. Bantu aku... Poin nya lumayan lhoooh..

Answer 1

A) x.(x-9) = 0
x = 0

atau

x-9 = 0
x = 9


b) 4x²-3x-10 = 0
(2x+2)(2x-5) = 0
2x+2 = 0
2x = -2
x = -1

atau

2x-5 = 0
2x = 5
x = 5/2
x = 2 1/2



c) x²-36 = 0
(x+6)(x-6) = 0
x+6 = 0
x = -6

atau

x-6 = 0
x = 6



d) 12x²-23x+5 = 0
(4x-1)(3x-5) = 0
4x-1 = 0
4x = 1
x = 1/4

atau

3x-5 = 0
3x = 5
x = 5/3
x = 1 2/3