Math, asked by dummanichandramohan, 2 months ago

Factorise : - m²-4m-21

Answers

Answered by Volvo97

0

Use the identities, if identies can't be applied then split the middle term of this question.

Answered by Aarushikumari048

4

Answer:

m² - 4m - 21

m² - 7m + 3m - 21

m(m - 7) + 3( m - 7)

( m - 7) (m + 3)

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