Question

Answer 1

a: 4x^2-12x+9=(2x-3)^2

b: 4x^2+4x+1=(2x+1)^2

c: 36x^2+12x+1=(6x+1)^2

Answer 2

a/ \(4x^2-12x+9=\left(2x\right)^2-2.2x.3+3^2=\left(2x-3\right)^2\)

b/ \(4x^2+4x+1=\left(2x\right)^2+2.2x.1+1^2=\left(2x+1\right)^2\)

c/ \(1+12x+36x^2=1^2+2.1.6x+\left(6x\right)^2=\left(1+6x\right)^2\)