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3x-10(x2)=13-7x
We move all terms to the left:
3x-10(x2)-(13-7x)=0
We add all the numbers together, and all the variables
3x-10x2-(-7x+13)=0
We add all the numbers together, and all the variables
-10x^2+3x-(-7x+13)=0
We get rid of parentheses
-10x^2+3x+7x-13=0
We add all the numbers together, and all the variables
-10x^2+10x-13=0
a = -10; b = 10; c = -13;
Δ = b2-4ac
Δ = 102-4·(-10)·(-13)
Δ = -420
Delta is less than zero, so there is no solution for the equation
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