tentukan penyelesaian persamaan ini dengan memfaktorkan
Jawaban:
5. x² + 16x + 64 = 0
= ( x + 8)² = 0
= x + 8 = 0
= x = 8
6.4x² + 12x + 5 = 0
= ( x + 5/2 ) . ( x + 1/2 )
x + 5/2 = 0 | x + 1/2 = 0
x = -5/2 | x = -1/2
7. 9x² - 30x + 25 = 0
= x² - 10/3 x + 25/9 = 0
= 1/9 ( 3x - 5 )² = 0
= ( 3x - 5 )² = 0
= 3x - 5 = 0
= x = 5/3
*maaf kalo salah
[answer.2.content]