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y = x^2 - 5x + 3
5x + y = 39
Which of the following is the x-value of a solution to
the system of equations above?
A) 6
B) 12
C) 18
D) 36

Respuesta :

Answer:

x = 6 (A)

Explanation:

We plug y = x^2 - 5x + 3 into 5x + y = 39 and we have

5x + x^2 - 5x + 3 = 39

-> x^2 = 36

-> x = 6

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