paige7181
paige7181 paige7181
  • 20-06-2019
  • Mathematics
contestada

Solve the system of equations.
y= 2x
y= x^2 - 15

Respuesta :

Mathhisfunn101
Mathhisfunn101 Mathhisfunn101
  • 23-06-2019

Answer:

Since both equations are equal to each other given that they are both equal to y, you can say that . . .

2x = x^2  - 15

x^2 - 2x - 15 = 0

(x-5) (x+3) = 0

Zero Product Property

x = 5 ; x = -3

Solve for y:

y = 2(5) ; y = 2(3)

y = 10 ; y = 6

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