Question

Select the correct answer.

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

Answer 1

The answer is (-3,0)

Answer 2

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 +
`√(4)`) / 2 of X = (-4 +
`√(4)`) / 2

x= -1 x=-3