ZariSmith0040 ZariSmith0040
  • 10-06-2021
  • Mathematics
contestada

A system of equations is given below. For what value(s) of x is f(x)=g(x) ?

f(x)=x2+3x

g(x)=x+3

Respuesta :

VectorFundament120
VectorFundament120 VectorFundament120
  • 10-06-2021

[tex] \large{f(x) = g(x)} \\ \large{ {x}^{2} + 3x = x + 3}[/tex]

Since we are solving the quadratic equation because the highest degree in the equation is second. We arrange in the form of ax²+bx+c = 0.

[tex] \large{ {x}^{2} + 3x - x - 3 = 0}[/tex]

Combine like terms.

[tex] \large{ {x}^{2} + 2x - 3 = 0}[/tex]

Solve the equation by factoring.

[tex] \large{(x + 3)(x - 1) = 0} \\ \large{x = - 3,1}[/tex]

Hence the values of x that make f(x) = g(x) are -3 and 1.

Answer

  • x = -3,1

Let me know if you have any doubts!

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