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(x+2)(2x+7)=4x+10x+2
We move all terms to the left:
(x+2)(2x+7)-(4x+10x+2)=0
We add all the numbers together, and all the variables
(x+2)(2x+7)-(14x+2)=0
We get rid of parentheses
(x+2)(2x+7)-14x-2=0
We multiply parentheses ..
(+2x^2+7x+4x+14)-14x-2=0
We get rid of parentheses
2x^2+7x+4x-14x+14-2=0
We add all the numbers together, and all the variables
2x^2-3x+12=0
a = 2; b = -3; c = +12;
Δ = b2-4ac
Δ = -32-4·2·12
Δ = -87
Delta is less than zero, so there is no solution for the equation
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