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20(0.3-x)(0.5-x)=0.6-
We move all terms to the left:
20(0.3-x)(0.5-x)-(0.6-)=0
We add all the numbers together, and all the variables
20(-1x+0.3)(-1x+0.5)-0=0
We add all the numbers together, and all the variables
20(-1x+0.3)(-1x+0.5)=0
We multiply parentheses ..
20(+x^2-0.5x-0.3x+0.15)=0
We multiply parentheses
20x^2+0x+0x+3=0
We add all the numbers together, and all the variables
20x^2+2x+3=0
a = 20; b = 2; c = +3;
Δ = b2-4ac
Δ = 22-4·20·3
Δ = -236
Delta is less than zero, so there is no solution for the equation
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