(X+4)*(b-15)=4b-330

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Solution for (X+4)*(b-15)=4b-330 equation: 



(X+4)(X-15)=4X-330

We move all terms to the left:

(X+4)(X-15)-(4X-330)=0

We get rid of parentheses

(X+4)(X-15)-4X+330=0

We multiply parentheses ..

(+X^2-15X+4X-60)-4X+330=0

We get rid of parentheses

X^2-15X+4X-4X-60+330=0

We add all the numbers together, and all the variables

X^2-15X+270=0

a = 1; b = -15; c = +270;
Δ = b2-4ac
Δ = -152-4·1·270
Δ = -855
Delta is less than zero, so there is no solution for the equation

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