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(4x^2-6x+7)=(-19x^2-15x-18)
We move all terms to the left:
(4x^2-6x+7)-((-19x^2-15x-18))=0
We get rid of parentheses
-((-19x^2-15x-18))+4x^2-6x+7=0
We calculate terms in parentheses: -((-19x^2-15x-18)), so:We add all the numbers together, and all the variables
(-19x^2-15x-18)
We get rid of parentheses
-19x^2-15x-18
Back to the equation:
-(-19x^2-15x-18)
4x^2-(-19x^2-15x-18)-6x+7=0
We get rid of parentheses
4x^2+19x^2+15x-6x+18+7=0
We add all the numbers together, and all the variables
23x^2+9x+25=0
a = 23; b = 9; c = +25;
Δ = b2-4ac
Δ = 92-4·23·25
Δ = -2219
Delta is less than zero, so there is no solution for the equation
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