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abigail251
18.03.2021 •
Mathematics
Solve for m: 3m2 + 30m – 168 = 0.
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Ответ:
Step-by-step explanation:
On simplifying its
M2 + 10m - 56 = 0 (divide both side by 3)
M2 - 4m + 14m - 56=0
M(M-4) + 14(m-4) =0
(M+14) + (m-4)=0
M =4, - 14.
If the condition is given that you cannot put m's value negative. Than the answer is M=5
THANKU
Ответ:
m = 4
m = -14
Step-by-step explanation:
here's your solution
=> 3m^2 + 30m - 168
=> firstly we will make it in simplest form
=> take 3 common
=> 3(m^2 + 10m - 56)
=> we get , (m^2 + 10m - 56)
=> now, factories it by using middle term split
=> m^2 + 14m - 4m - 56
=> now take common
=> m(m + 14) - 4(m + 14)
=> (m - 4) (m + 14)
=> m - 4 = 0
=> m= 4
=> (m+14) =0
=> m = -14
Ответ:
an hour is y