Question

factorise 16x^2-16x-21​

Answer 1

Answer:

Hello Good afternoon

Here is your answer from above attachment.

Answer 2

$\large\mathrm\blue{✎~(4x+7)(4x-3)~✍}$

Given:

16x²-16x-21

Solve:

16x²-16x-21

Now we have to distribute -16x such that

the sum of the number should be -16x

and product of the number should be equal to product of

x² coefficient and last term

-12 × 28 = 16 × 21

16x²+12x-28x-21

take comman factors

4x(4x+3) -7(4x+3)

(4x-7)(4x+3)