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Simplificati: 7x²-7/8x²-16x+8

Răspuns :

=7(x patrat minus 1 patrat)supra 8(xpatrat minus 2x+1)=
Xpatrat minus 1 patrat =( x -1)(x+1)
Xpatrat minus 2x + 1=(x-1)la patrat=(x-1)(x-1)
Deci fractia ta devine asa =7[ (x -1)(x +1) supra 8(x-1)(x-1)=  7(x+1)/8(x-1)