Question

fatore
a)2x²-18=
b)4x²-81y²=
c)25a²-1=
d) 49x²-14x+1=​

Answer 1

a)2x²-18= 2(x² -9) = 2(x+3)(x-3)

b)4x²-81y²= (2x + 9y)(2x - 9y)

c)25a²-1= (5a +1)(5a -1)

d) 49x²-14x+1= (7x - 1)²