R=(4-0.25x)(6+x)

Solution for R=(4-0.25x)(6+x) equation:

=(4-0.25R)(6+R)

We move all terms to the left:

-((4-0.25R)(6+R))=0

We add all the numbers together, and all the variables

-((-0.25R+4)(R+6))=0

We multiply parentheses ..

-((+0R^2+0R+4R+24))=0


We calculate terms in parentheses: -((+0R^2+0R+4R+24)), so:

(+0R^2+0R+4R+24)

We get rid of parentheses

0R^2+0R+4R+24

We add all the numbers together, and all the variables

R^2+5R+24

Back to the equation:

-(R^2+5R+24)


We get rid of parentheses

-R^2-5R-24=0

We add all the numbers together, and all the variables

-1R^2-5R-24=0

a = -1; b = -5; c = -24;
Δ = b2-4ac
Δ = -52-4·(-1)·(-24)
Δ = -71
Delta is less than zero, so there is no solution for the equation