Question

Descompune in factori folosind formula a²-b²=(a-b)(a+b). a).x²-1 b).x²-4 c). x²-9 d). x²-16 e). x²-25

Answer 1

a)(x-1)(x+1)
b)(x-2)(x+2)
c)(x-3)(x+3)
d)(x-4)(x+4)
e)(x-5)(x+5)