Question

What are the x-intercepts of the quadratic function?

f(x) = x^2 − 3x − 10

Enter your answers in the boxes.

______ and ______

Answer 1

@Vocaloid

Answer 2

start by factoring it

Answer 3

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

Answer 4

yeah that's right

if the problem doesn't accept that as your answer, it might want just "5" and "-2" instead, I'm not sure

Answer 5

you think ?

Answer 6

try entering (5, 0) and (-2, 0) first, if it doesn't accept that, enter 5 and -2

Answer 7

your math is correct

Answer 8

Let ​f(x) = x^2 + 14x + 48​.



What are the zeros of the function?

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______ and _______

Answer 9

same thing as before, start factoring

Answer 10

f(x) = (x - 4) (x + 6)

Answer 11

that's not quite right, check your factoring again

hint - pick two integers that multiply together to get 48 and add to get 14

Answer 12

12 x 4

Answer 13

not quite

12 + 4 is not 14

Answer 14

the answers are -6 and 4

Answer 15

nope

-6 + 4 is not 14

remember the sum must be ***14***

Answer 16

no that's x intercepts

Answer 17

does (x+6)(x-4) = x^2 + 14x + 48​?

if not, then 6 and -4 are NOT the intercepts.

Answer 18

(4, 0) and (-6, 0)

Answer 19

and yes

Answer 20

use foil to expand (x+6)(x-4)

you will see that it is not equal to x^2 + 14x + 48

Answer 21

again, you must pick two numbers that *** add up to 14 *** and *** multiply to get 48 ***

Answer 22

2x for 14 and 24 for 48

Answer 23

nope, keep trying, we are looking for two integers (not variables)

Answer 24

start by listing pairs of numbers that multiply to get 48

Answer 25

6 x 8 = 48, 6 and 8 add up to 14 and multiply to 48

Answer 26

good

so we factor to get

(x+6)(x+8) = 0

what are the x-intercepts?

Answer 27

x = -6, -8

Answer 28

good, so (-6,0) and (-8,0) are your intercepts

Answer 29

What are the x-intercepts of the quadratic function?

f(x) = x^2 + 2x − 24



Enter your answers in the boxes.


____ and _____

Answer 30

did we did this already ?

Answer 31

not yet

try picking two numbers that multiply to get -24 and add to get 2

Answer 32

the answers is -6 and 4

Answer 33

for the intercepts? yeah, (-6,0) and (4,0)

Answer 34

thank you so very much