danielahchf danielahchf

26-04-2019
Mathematics

contestada

Where does the graph of
y = x^2 - x - 20 cross the x-axis?

(-5,0) and (4,0)
(4,0) and (5,0)
(2,0) and (-10,0)
(5,0) and (-4,0)

Where does the graph of y x2 x 20 cross the xaxis 50 and 40 40 and 50 20 and 100 50 and 40 class=

Respuesta :

mkryukova19 mkryukova19

26-04-2019

Answer:

D

Step-by-step explanation:

"Cross the x-axis" means that y =0

0=x²-x-20

(x-5)(x+4)=0

x=5, x= - 4

Points (5,0) and (-4,0)

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