factorise the following by splitting the middle term
m2 - 26m + 133 3a2 - 5b + 2
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(i) m^2-26m+133
m^2-19m-7m+133=0
m(m-19)-7(m-19)=0
(m-19)(m-7)=0
m-19=0
m=19
m-7=0
m=7
m^2-19m-7m+133=0
m(m-19)-7(m-19)=0
(m-19)(m-7)=0
m-19=0
m=19
m-7=0
m=7
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