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3n*n+5=n*n-7n-18
We move all terms to the left:
3n*n+5-(n*n-7n-18)=0
We add all the numbers together, and all the variables
3n*n-(-7n+n*n-18)+5=0
Wy multiply elements
3n^2-(-7n+n*n-18)+5=0
We get rid of parentheses
3n^2+7n-n*n+18+5=0
We add all the numbers together, and all the variables
3n^2+7n-n*n+23=0
Wy multiply elements
3n^2-1n^2+7n+23=0
We add all the numbers together, and all the variables
2n^2+7n+23=0
a = 2; b = 7; c = +23;
Δ = b2-4ac
Δ = 72-4·2·23
Δ = -135
Delta is less than zero, so there is no solution for the equation
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