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(R)=7R+7/2R+4
We move all terms to the left:
(R)-(7R+7/2R+4)=0
Domain of the equation: 2R+4)!=0We get rid of parentheses
R∈R
R-7R-7/2R-4=0
We multiply all the terms by the denominator
R*2R-7R*2R-4*2R-7=0
Wy multiply elements
2R^2-14R^2-8R-7=0
We add all the numbers together, and all the variables
-12R^2-8R-7=0
a = -12; b = -8; c = -7;
Δ = b2-4ac
Δ = -82-4·(-12)·(-7)
Δ = -272
Delta is less than zero, so there is no solution for the equation
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