Math, asked by nithishkannan1812200, 8 months ago

Factorize following expressions x2 -4x – 21

Answers

Answered by Anonymous

5

x²- 4x -21

= x² -7x + 3x -21

= (x - 7) ( x + 3) are the factors

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Answered by Anonymous

4

X² - 4x - 21

product = -21

-7 -3

sum = -4

so (x - 7) (X - 3)

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