Question

solve by factorization



7m²=21m​

Answer 1

$\sf\huge\underline{Answer:}$

$7 {m}^{2} = 21m$

$7 {m}^{2} - 21m = 0$

Bring out the common factor which is 7m

$7m(m - 3) = 0$

There are two possibilities, either 7m or (m - 3) should be equal to 0

$7m = 0$ ; $m = 0$

$(m - 3) = 0$ ; $m = 3$

$\boxed{m = 0 \: or \: 3}$

Have a good day!

Answer 2

ANSWER

refer the Attachment

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