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(x-5)(40-x)=2250
We move all terms to the left:
(x-5)(40-x)-(2250)=0
We add all the numbers together, and all the variables
(x-5)(-1x+40)-2250=0
We multiply parentheses ..
(-1x^2+40x+5x-200)-2250=0
We get rid of parentheses
-1x^2+40x+5x-200-2250=0
We add all the numbers together, and all the variables
-1x^2+45x-2450=0
a = -1; b = 45; c = -2450;
Δ = b2-4ac
Δ = 452-4·(-1)·(-2450)
Δ = -7775
Delta is less than zero, so there is no solution for the equation
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