3 years ago

Use substitution method & show your work.y = x^2 + 3x - 14x + 1 = y

1 answer:

7 0

4x + 1 = x^2 + 3x - 1
4x = x^2 + 3x - 2
0 = x^2 -x - 2
0 = x^2 -x + 1 - 3
0 = (x - 1)^2 - 3
3 = (x - 1)^2
sqrt 3=(x-1) and (-(x-1))
x = 1+sqrt 3 and 1-sqrt 3
sqrt means square root

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Answer:

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Step-by-step explanation:

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1: Using the given inputs

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2 years ago

Read 2 more answers

3x + y - z= -6<br> 2x - y + 2z = 8<br> 4x + y - 3z = -21

Flauer [41]

Answer:

x=-1

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Step-by-step explanation:

3x + y - z= -6(1)

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(1)+(2): 5x+z=2(4)

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(4)+(5): 11x=-11

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