(x+5)(8-x)=47

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Solution for (x+5)(8-x)=47 equation: 



(x+5)(8-x)=47

We move all terms to the left:

(x+5)(8-x)-(47)=0

We add all the numbers together, and all the variables

(x+5)(-1x+8)-47=0

We multiply parentheses ..

(-1x^2+8x-5x+40)-47=0

We get rid of parentheses

-1x^2+8x-5x+40-47=0

We add all the numbers together, and all the variables

-1x^2+3x-7=0

a = -1; b = 3; c = -7;
Δ = b2-4ac
Δ = 32-4·(-1)·(-7)
Δ = -19
Delta is less than zero, so there is no solution for the equation

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