Question

Q1) world problem.

$1)factorise \: and \: write \: in \: \\ product \: form \: 9 {x}^{2} - \frac{1}{16} {y}^{2}$
please help me I don't know about this question.​

Answer 1

Step-by-step explanation:

Using:a

2

−b

2

=(a+b)(a−b)

Using the above identity, the equation 9x

2

−16y

2

can be factorised as follows:

9x

2

−16y

2

=(3x)

2

−(4y)

2

=(3x+4y)(3x−4y)

Hence, 9x

2

−16y

2

=(3x+4y)(3x−4y)