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0=4(x^2+50x+1200)
We move all terms to the left:
0-(4(x^2+50x+1200))=0
We add all the numbers together, and all the variables
-(4(x^2+50x+1200))=0
We calculate terms in parentheses: -(4(x^2+50x+1200)), so:We get rid of parentheses
4(x^2+50x+1200)
We multiply parentheses
4x^2+200x+4800
Back to the equation:
-(4x^2+200x+4800)
-4x^2-200x-4800=0
a = -4; b = -200; c = -4800;
Δ = b2-4ac
Δ = -2002-4·(-4)·(-4800)
Δ = -36800
Delta is less than zero, so there is no solution for the equation
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