Question

Factorise
4y² - 12 + 9
​

Answer 1

Step-by-step explanation:

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Answer 2

Answer:

Method 1:-

= > 4 {y}^{2} + 9 - 12y

=>4y 2 +9−12y

= > 4 {y}^{2} - 12y + 9

=>4y 2 −12y+9

Factorize it by the middle term technique/Splitting middle term technique.

=> 4 {y}^{2} - 6y - 6y + 9

=>4y 2 −6y−6y+9

=> 2y(2y - 3) - 3(2y - 3)

=>2y(2y−3)−3(2y−3)

=> (2y - 3)(2y - 3)

=>(2y−3)(2y−3)

= > (2y - 3) {}^{2}

=>(2y−3) 2

Method 2:-

=4y²+9-12y

=(2y)²+3²-2×2y×3

=(2y-3)²

I used (a-b)²=a²+b²-2ab

Step-by-step explanation:

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