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(1.2-x)(1.8-x)/0.919(0.2+x)=x
We move all terms to the left:
(1.2-x)(1.8-x)/0.919(0.2+x)-(x)=0
Domain of the equation: 0.919(0.2+x)!=0We add all the numbers together, and all the variables
x∈R
(-1x+1.2)(-1x+1.8)/0.919(x+0.2)-x=0
We add all the numbers together, and all the variables
-1x+(-1x+1.2)(-1x+1.8)/0.919(x+0.2)=0
We multiply parentheses ..
(+x^2-1.8x-1.2x+2.16)/0.919(x+0.2)-1x=0
We multiply all the terms by the denominator
(+x^2-1.8x-1.2x+2.16)-1x*0.919(x+0.2)=0
Wy multiply elements
(+x^2-1.8x-1.2x+2.16)+0x^2=0
We get rid of parentheses
x^2+0x^2-1.8x-1.2x+2.16=0
We add all the numbers together, and all the variables
2x^2-3x+2.16=0
a = 2; b = -3; c = +2.16;
Δ = b2-4ac
Δ = -32-4·2·2.16
Δ = -8.28
Delta is less than zero, so there is no solution for the equation
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