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Doar punctele c, e , h . va rog.

Doar Punctele C E H Va Rog class=

Răspuns :

c) [6x- (x²-2x+3)] *[6x+(x²-2x+3)]=
(6x-x²+2x-3)*(6x+x²-2x+3)= (-x²+8x-3)*(x²+4x+3)= (-x²+8x-3)*(x+3)*(x+1)
e)x²+2x+1-y²= (x+1)²-y²=(x+1-y)*(x+1+y)
h)(x²-3x+4)²-(x²+2)² = [(x²-3x+4) - (x²+2)]*[(x²-3x+4)+x²+2]=
=(x²-3x+4-x²-2)*(x²-3x+4+x²+2)= (-3x+2)*(2x²-3x+6)