Răspuns :
a) x²-6x+8= x² -4x-2x+8 = x( x-4) -2 ( x-4) = (x-4)(x-2)
b) x²-14x+48= x² - 8x-6x+48 = x(x-8) -6(x-8)= (x-8)(x-6)
c) 81a²+18a-8 = 81a² +18a -36a -8 = 9a(9a+2) - 4(9a+2)= (9a+2)(9a-4)
b) x²-14x+48= x² - 8x-6x+48 = x(x-8) -6(x-8)= (x-8)(x-6)
c) 81a²+18a-8 = 81a² +18a -36a -8 = 9a(9a+2) - 4(9a+2)= (9a+2)(9a-4)