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Readme [11.4K]
3 years ago
10

Discuss the nature of the roots x^2+6x=3

Mathematics
2 answers:
IceJOKER [234]3 years ago
8 0
x^2+6x=3\\
x^2+6x+9-9=3\\
(x+3)^2=12\\
x+3=\sqrt{12} \vee x+3=-\sqrt{12}\\
x=-3+\sqrt{12} \vee x=-3-\sqrt{12}\\
x=-3+2\sqrt{3} \vee x=-3-2\sqrt{3}\\
Lynna [10]3 years ago
5 0
x^{2} +6x=3
x^{2} +6x-3=0
using quadratic formula --> x= \frac{-6± \sqrt{6^{2}-4 *1*-3} }{2*1} 
x=-3+2 \sqrt{3} 
AND
x=-3-2 \sqrt{3}



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So elimination method is basically adding the equations and canceling out variables. 
-6x + 6y = 6
-6x + 3y = -12
The eaiest way to solve is by multiplying the bottom equation by -1.
-6x + 6y = 6
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Now plug in 6 into any of the original two equations. Lets use the first one.
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If f(x)=3x+1 and g(x)=x^2-6 find (f-g)(x)
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