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(R)=(12+0.5R)(36-2R)
We move all terms to the left:
(R)-((12+0.5R)(36-2R))=0
We add all the numbers together, and all the variables
R-((0.5R+12)(-2R+36))=0
We multiply parentheses ..
-((+0R^2+0R-24R+432))+R=0
We calculate terms in parentheses: -((+0R^2+0R-24R+432)), so:We add all the numbers together, and all the variables
(+0R^2+0R-24R+432)
We get rid of parentheses
0R^2+0R-24R+432
We add all the numbers together, and all the variables
R^2-23R+432
Back to the equation:
-(R^2-23R+432)
R-(R^2-23R+432)=0
We get rid of parentheses
-R^2+R+23R-432=0
We add all the numbers together, and all the variables
-1R^2+24R-432=0
a = -1; b = 24; c = -432;
Δ = b2-4ac
Δ = 242-4·(-1)·(-432)
Δ = -1152
Delta is less than zero, so there is no solution for the equation
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