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(X2)=(X-7)
We move all terms to the left:
(X2)-((X-7))=0
We add all the numbers together, and all the variables
X^2-((X-7))=0
We calculate terms in parentheses: -((X-7)), so:We get rid of parentheses
(X-7)
We get rid of parentheses
X-7
Back to the equation:
-(X-7)
X^2-X+7=0
We add all the numbers together, and all the variables
X^2-1X+7=0
a = 1; b = -1; c = +7;
Δ = b2-4ac
Δ = -12-4·1·7
Δ = -27
Delta is less than zero, so there is no solution for the equation
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