Question

factorise:- 4y²-12y+9..​

Answer 1

Answer:

Answer

(5x)2+(2y)2+(3z)2−2(5x)(2y)+2(2y)(3z)−2(3z)(5x) 

=(5x−2y−3z)2 

Only x is negative. 

=(−(−5x+2y+3z))2

Or =(5x−2y−3z)2

Answer 2

Step-by-step explanation:

4y²–6y–6y+9

=2y(2y-3)–3(2y–3)

= (2y–3)(2y–3)

= (2y–3)²

hope it helps u ☺