Question

x2-4x-21 factorise please I need right answer​

Answer 1

Answer:

r3fer the attachment for the answer

Answer 2

Answer:

Step-by-step explanation:

Step 1: x^2-4x+21

Now it can be written as,

-4x= -7x+3x

Therefore, x^2-7x+3x+21

= x(x-7)+3(x-7)

=(x-7)(x+3)

hope it is helpful.

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