tentukan nilai x (x - 3)² = (x - 2)² - 5

Question

Matematika Diposting : 2017-07-30 Diupdate : 2018-09-20 Astri342

Pertanyaan

tentukan nilai x
(x - 3)² = (x - 2)² - 5

Answer 1

x^2 - 6x +9 =x^2-4x + 4-5

=-2x+8

Answer 2

(x - 3)² = (x - 2)² - 5
x² - 6x + 9 = x² - 4x + 4 - 5
x² - x² - 6x + 4x = 4 - 5 - 9
-2x = -10
x = 5