Question

Answer 1

 

Bài 1: 

a: \(4x^2-12x+9=\left(2x-3\right)^2\)

b: \(4x^2+4x+1=\left(2x+1\right)^2\)

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

d: \(9x^2-24xy+16y^2=\left(3x-4y\right)^2\)

e: \(\dfrac{x^2}{4}+2xy+4y^2=\left(\dfrac{1}{2}x+2y\right)^2\)

f: \(-x^2+10x-25=-\left(x-5\right)^2\)

g: \(-16a^4b^6-24a^5b^5-9a^6b^4\)

\(=-a^4b^4\left(16b^2-24ab+9a^2\right)\)

\(=-a^4b^4\left(4b-3a\right)^2\)