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(7x-2)3x+-1=-3+9x
We move all terms to the left:
(7x-2)3x+-1-(-3+9x)=0
We add all the numbers together, and all the variables
(7x-2)3x-(9x-3)-1+=0
We add all the numbers together, and all the variables
(7x-2)3x-(9x-3)=0
We multiply parentheses
21x^2-6x-(9x-3)=0
We get rid of parentheses
21x^2-6x-9x+3=0
We add all the numbers together, and all the variables
21x^2-15x+3=0
a = 21; b = -15; c = +3;
Δ = b2-4ac
Δ = -152-4·21·3
Δ = -27
Delta is less than zero, so there is no solution for the equation
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