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x-5=0.1(x+5)x
We move all terms to the left:
x-5-(0.1(x+5)x)=0
We calculate terms in parentheses: -(0.1(x+5)x), so:We get rid of parentheses
0.1(x+5)x
We multiply parentheses
0x^2+0x
We add all the numbers together, and all the variables
x^2+x
Back to the equation:
-(x^2+x)
-x^2+x-x-5=0
We add all the numbers together, and all the variables
-1x^2-5=0
a = -1; b = 0; c = -5;
Δ = b2-4ac
Δ = 02-4·(-1)·(-5)
Δ = -20
Delta is less than zero, so there is no solution for the equation
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