Question

find the value of m :3m power m is equal to 1 upon 9
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Answer 1

hi mates this is ur answer...

For equal roots D=b2−4ac=0

⇒[2(m+1)]2−4m(3m+1)=0

⇒m2+2m+1−3m2−m=0

⇒−2m2+m+1=0

⇒2m2−m−1=0⇒(m−1)(m+21)=0

⇒m=1,2−1 

hope this helps u