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-2(x2)-3(5-x)=2(3x-4x)+1
We move all terms to the left:
-2(x2)-3(5-x)-(2(3x-4x)+1)=0
We add all the numbers together, and all the variables
-2x2-3(-1x+5)-(2(-1x)+1)=0
We add all the numbers together, and all the variables
-2x^2-3(-1x+5)-(2(-1x)+1)=0
We multiply parentheses
-2x^2+3x-(2(-1x)+1)-15=0
We calculate terms in parentheses: -(2(-1x)+1), so:We get rid of parentheses
2(-1x)+1
We multiply parentheses
-2x+1
Back to the equation:
-(-2x+1)
-2x^2+3x+2x-1-15=0
We add all the numbers together, and all the variables
-2x^2+5x-16=0
a = -2; b = 5; c = -16;
Δ = b2-4ac
Δ = 52-4·(-2)·(-16)
Δ = -103
Delta is less than zero, so there is no solution for the equation
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