Question

Factorise
a) 4y2- 12y +9​

Answer 1

Answer:

Here's ur ans

Hope it helps

Pls mark me as brainliest

Answer 2

$\displaystyle \sf{4 {y}^{2} - 12y + 9 } = (2y - 3)(2y - 3)$

Given :

$\displaystyle \sf{4 {y}^{2} - 12y + 9 }$

To find :

To factorise the expression

Formula :

$\displaystyle \sf{ {(a - b)}^{2} = {a}^{2} - 2ab + {b}^{2} }$

Solution :

Step 1 of 2 :

Write down the given expression

Here the given expression is

$\displaystyle \sf{4 {y}^{2} - 12y + 9 }$

Step 2 of 2 :

Factorise the expression

$\displaystyle \sf{4 {y}^{2} - 12y + 9 }$

$\displaystyle \sf{ = {(2y)}^{2} - 2 \times 2y \times 3 + {(3)}^{2} }$

$\displaystyle \sf{ = {(2y - 3)}^{2} }\: \: \: \bigg[ \: \because \:{(a - b)}^{2} = {a}^{2} - 2ab + {b}^{2} \bigg]$

$\displaystyle \sf{ = (2y - 3) (2y - 3)}$

━━━━━━━━━━━━━━━━

Learn more from Brainly :-

$1.$ If a+b=7 and ab=4 and find Value of a² +b²

https://brainly.in/question/28413926

2. if (x+y) =9 and xy=6, find the value of x²+y²

https://brainly.in/question/23257499

#SPJ3