3 years ago

16 x - 4y = 3 y = 4x + 7

Mathematics

1 answer:

Damm [24]3 years ago

7 0

Answer:

Step-by-step explanation:

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Answer:

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Step-by-step explanation:

we have

$-2x^{2} +y=-5$ ----> equation A

$y=-3x^{2} +5$ -----> equation B

solve by substitution

substitute equation B in equation A

$-2x^{2} +(-3x^{2} +5)=-5$

solve for x

$-5x^{2} +5=-5$

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$x=\pm\sqrt{2}$

<em>Find the value of y</em>

$y=-3x^{2} +5$

For $x=\sqrt{2}$ ----> $y=-3(\sqrt{2})^{2} +5=-1$

For $x=-\sqrt{2}$ ----> $y=-3(-\sqrt{2})^{2} +5=-1$

therefore

The solutions are

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16 x - 4y = 3 y = 4x + 7 ​

16 x - 4y = 3 y = 4x + 7