3 years ago

3x²-2x=4 quadratic equation

Mathematics

1 answer:

Andreyy893 years ago

8 0

Answer:

here is the answer

Step-by-step explanation:

i needed the extra words to publish but look at the image

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Solve using the elimination method:<br> X-3y=7<br> 3x + 3y=9

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Answer:

$x=4\\\\y=-1$

Step-by-step explanation:

Given Equation:

$x-3y=7$ Equation:1

$3x + 3y=9$ Equation:2

Dividing Equation:2 by '3' both the sides:

$x+y=3$

or $x=3-y$ Equation:3

Putting the vale of 'x' in Equation:1

$x-3y=7$

$(3-y)-3y=7\\\\3-y-3y=7\\\\3-4y=7\\\\$

Subtracting '3' both sides

$-4y=7-3\\\\-4y=4$

$y=\frac{4}{-4}$

$y=-1$

Putting value of 'y' in Equation:3

$x=3-y$

$x=3-(-1)\\\\x=3+1\\\\x=4$

The solution of the equations is :

$x=4\\\\y=-1$

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Step-by-step explanation:

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3x²-2x=4 quadratic equation​

3x²-2x=4 quadratic equation