Math, asked by sanjudhaya2021, 10 months ago

Factorise: x2 – 4x – 21.

Answers

Answered by Imblank

8

Step-by-step explanation:

x²-4x-21

x²-7x+3x-21

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

(x-7)(x+3)

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Answered by revathyravindran9

1

Step-by-step explanation:

by solving the quadratic equation

we get, (x-7) & (x+3)

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