-m(2m+1)=7

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Solution for -m(2m+1)=7 equation: 



-m(2m+1)=7

We move all terms to the left:

-m(2m+1)-(7)=0

We multiply parentheses

-2m^2-m-7=0

We add all the numbers together, and all the variables

-2m^2-1m-7=0

a = -2; b = -1; c = -7;
Δ = b2-4ac
Δ = -12-4·(-2)·(-7)
Δ = -55
Delta is less than zero, so there is no solution for the equation

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