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4x^2+14x+49=15
We move all terms to the left:
4x^2+14x+49-(15)=0
We add all the numbers together, and all the variables
4x^2+14x+34=0
a = 4; b = 14; c = +34;
Δ = b2-4ac
Δ = 142-4·4·34
Δ = -348
Delta is less than zero, so there is no solution for the equation
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