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RUDIKE [14]
3 years ago
14

What is the value of the discriminante for the quadratic equation 0=2x^+x-3

Mathematics
1 answer:
denpristay [2]3 years ago
8 0

Answer:

x1= 1 , x2 = (-1.5)

Step-by-step explanation:

If you have any questions about the way I solved it, don't hesitate to ask me ;}

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Solving by elimination <br> 5x+2y= -3<br> 3x+3y=9<br> please help me solve x and y
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1) -3(5x+2y=-3)⇒ -15x-6y=9
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2) -9x/-9=27/-9 ⇒ x=-3 

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Reasoning:
Step 1) In order to eliminate, first I had to multiple the first equation by -3 and the second by 2 so that when combining the equations y would cancel each other out so that I could solve for x. <em>Note: There are many combinations as to how you could multiple the equations so that either the x or y would cancel out.
</em>
Step 2) Once y is eliminated, solve for x.

Step 3) Now plug x back into one of the original equations and solve for y. <em>Note: Plug x back into one of the original equations, not the equations that were changed by multiplication,</em> 

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