factorise m^2 + 18m+ 77
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4
Given m^2 + 18m + 77
m^2 + 7m + 11m + 77
m(m + 7) + 11(m + 7)
(m + 7)(m + 11).
m^2 + 7m + 11m + 77
m(m + 7) + 11(m + 7)
(m + 7)(m + 11).
Answered by
0
m^2+18m+77=0
(m^2+11m)+(7m+77)=0
m(m+11)+7(m+11)=0
(m+7)(m+11)=0
m= -7. or m= -11
(m^2+11m)+(7m+77)=0
m(m+11)+7(m+11)=0
(m+7)(m+11)=0
m= -7. or m= -11
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