m²+16m+63 please solve it
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1
Answer:
Step-by-step explanation:
I hope these would help u.. Plz mark as a brainleist
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sai0112:
how do you know that it is equal to zero
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Answer: (m+7)(m+9)
Step-by-step explanation:
first we have to find two numbers
which on adding will give 16
and on multiplying will give 63
those two numbers are 9 and 7
so now we can re write it as
m² + 9m + 7m + 63
now group these like this
(m² + 9m) +( 7m + 63)
from (m² + 9m) take m common then
=>m(m+9)
from (7m + 63) take 7 common then
=> 7(m+9)
so we get a equation like this
=>m(m+9) + 7(m+9)
in these we can see that "m + 9" can be taken common
by doing that you will get
=> (m+7)(m+9)
hope you understood
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