Question

7m2+21m+0=0 solve by factorisation method plzz​

Answer 1

Answer:

$m = 0 \: \: or \: m \: = - 7$

Step-by-step explanation:

$7m {}^{2} + 21m \: + 0 = 0 \\ 7m(m + 7) = 0 \\ 7m \: = 0 \: \: \: \: or \: m + 7 = 0 \\ m = 0 \: \: \: \: \: or \: \: m \: = - 7$

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