bihboodyjoody bihboodyjoody
  • 19-11-2020
  • Mathematics
contestada

Select the correct answer.
Which point is a point where the graph of y= (x + 2)(x2 + 4x+3) crosses the x-axis?

Select the correct answer Which point is a point where the graph of y x 2x2 4x3 crosses the xaxis class=

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teerlinckjanne2002 teerlinckjanne2002
  • 19-11-2020

Answer:

A. (-3,0)

Step-by-step explanation: you have to set the equation y to zero and than calculate the x

--> (x + 2)(x2 + 4x+3) = 0

--> (x+2) = 0 and (x2 +4x + 3) =0

--> X = -2 and        D= (4² - 4*2*3) = 4

                                      X = (-4 + [tex]\sqrt{4}[/tex]) / 2 of  X = (-4 + [tex]\sqrt{4}[/tex]) / 2

                                       x= -1                         x=-3

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terahnguyen
terahnguyen terahnguyen
  • 10-11-2021

Answer:

The answer is (-3,0)

Answer Link

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