X(x-15)-3=(x+6)(x-6)-8x

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Solution for X(x-15)-3=(x+6)(x-6)-8x equation: 



X(X-15)-3=(X+6)(X-6)-8X

We move all terms to the left:

X(X-15)-3-((X+6)(X-6)-8X)=0

We use the square of the difference formula

X^2+X(X-15)+36-3=0

We multiply parentheses

X^2+X^2-15X+36-3=0

We add all the numbers together, and all the variables

2X^2-15X+33=0

a = 2; b = -15; c = +33;
Δ = b2-4ac
Δ = -152-4·2·33
Δ = -39
Delta is less than zero, so there is no solution for the equation

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