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Nomor 74
Nomor 77
Nomor 78
Nomor 79
Nomor 80
—————
x² - 4
= (x+1)(x+2)
—————— (yang sama dicoret)
(x+2)(x-2)
= (X-1)
——— (D)
(x-2)
coretan:
* x²+3x+2
p+q=3| P:1
p×q=2| Q:2
(X+P)(X+Q)
(x+1)(x-2)
*x² - 4
(x+2)(x-2)