3 years ago

Solve the system of equations: y= 2x+1 y = x2 + 2x-8

Mathematics

1 answer:

KatRina [158]3 years ago

6 0

Answer:

x = ±3

Step-by-step explanation:

Put both equations equal to each other.

2x + 1 = x^2 - 8

Cancel 2x on both sides.

1 = x^2 - 8

Add 8 to both sides.

1 + 8 = x^2

Simplify 1 + 8 to 9.

9 = x^2

Take the square root of both sides.

±√9 = x

±3=x

Simplify.

x = ±3

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