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10xla2+7x+1=0 acum dacă vreti

Răspuns :

10x la a 2-a = 100x
100x + 7x + 1 = 0
107x + 1 = 0
107x = -1
x = -1 / 107
(8x-1)(x+1)= 0 Note:SUM of the outside terms(8x) and the inside terms(-x) = 7x
(8x-1)= 0 x = 1/8
(x+1)= 0 x = 0