Question

help me quick please............ all of them​

Answer 1

Answer:

1)(p^2-4)=(p-2)(p+2)

p^2+5p+6

p^2+2p+3p+6

p(p+2)+3(p+2)

(p+2)(p+3)

so hcf = (p+2)

2)(2a+y)(2a-y) =4a^2-y^2

=(4a^2-y^2)(4a^2+y^2)

(16a^4-y^4)

all are using the same identify (a+b)(a-b) =a^2-b^2

3)

(x-3)(x^2+3x+9)=(x^3-27)

by using

(a^3-b^3)=(a-b) (a^2+ab+b^2)