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-45x+3x(-x+10)=49+9x
We move all terms to the left:
-45x+3x(-x+10)-(49+9x)=0
We add all the numbers together, and all the variables
-45x+3x(-1x+10)-(9x+49)=0
We multiply parentheses
-3x^2-45x+30x-(9x+49)=0
We get rid of parentheses
-3x^2-45x+30x-9x-49=0
We add all the numbers together, and all the variables
-3x^2-24x-49=0
a = -3; b = -24; c = -49;
Δ = b2-4ac
Δ = -242-4·(-3)·(-49)
Δ = -12
Delta is less than zero, so there is no solution for the equation
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