Question

4) Fatore as diferença de quadrados:

a)x^2-4=

b)a^2-36=

c)y^2-1

d)25x^2-4

e)1/100a^2-1/49=

Answer 1

a) (x - 2) (x + 2)
b) (a - 6) ( a + 6)
c) (y - 1) (y + 1)
d) (5x - 2) (5x + 2)
e) (1/10a - 1/7) (1/10a + 1/7)

Answer 2

a)x^2-4 = (x+2)(x-2)

b)a^2-36 = (a+6)(a-6)

c)y^2-1= (y+1)(y-1)

d)25x^2-4 = (5x+2)(5x-2)

e)1/100a^2-1/49= = (1/10a+1/7)(1/10a-1/7)