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dmitriy555 [2]
3 years ago
11

What are the solutions to the following system? StartLayout Enlarged left-brace 1st row negative 2 x squared + y = negative 5 2n

d row y = negative 3 x squared + 5 EndLayout (0, 2) (1, –2) (StartRoot 2 EndRoot, negative 1) and (negative StartRoot 2 EndRoot, negative 1) (StartRoot 5 EndRoot, negative 10) and (negative StartRoot 5 EndRoot, negative 10)
Mathematics
2 answers:
Yakvenalex [24]3 years ago
8 0

Answer:

(\sqrt{2},-1),(-\sqrt{2},-1)

(StartRoot 2 EndRoot, negative 1) and (negative StartRoot 2 EndRoot, negative 1)

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

-5x^{2}=-10

x^{2}=2

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

(\sqrt{2},-1),(-\sqrt{2},-1)

(StartRoot 2 EndRoot, negative 1) and (negative StartRoot 2 EndRoot, negative 1)

Harrizon [31]3 years ago
8 0

Answer:

answer is C. on edgenuty. Good luck. I might fail and repeat junior year bc im so behind

Step-by-step explanation:

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