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dedylja [7]
3 years ago
11

Solve the system of equations. y=3x+2 y=x^2-4+2

Mathematics
1 answer:
Pavel [41]3 years ago
4 0

The solutions to the system of equations are (4, 15) and (-1,-1)

<h3>How to solve the system of equations?</h3>

The system of equations is given as:

y=3x+2

y=x^2-4+2

Substitute y=3x+2 in y=x^2-4+2

3x + 2=x^2-4+2

Simplify

x^2 - 3x - 4 = 0

Expand

x^2 + x - 4x - 4x = 0

Factorize

x(x + 1) - 4(x + 1) = 0

This gives

(x - 4)(x + 1) = 0

Solve for x

x = 4 and x = -1

Substitute these values in y=3x+2

y = 3(4)+2 = 15

y = 3(-1)+2 = -1

Hence, the solutions to the system of equations are (4, 15) and (-1,-1)

Read more about system of equations at:

brainly.com/question/12895249

#SPJ1

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<h3>Answer:   -8</h3>

===================================================

Work Shown:

Q(x) = 4x^2 + 5x - 7

Q(-1) = 4(-1)^2 + 5(-1) - 7 .... replace every x with -1; use PEMDAS

Q(-1) = 4(1) + 5(-1) - 7

Q(-1) = 4 - 5 - 7

Q(-1) = -1 - 7

Q(-1) = -8

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