Question

Alg 1 Honors!

1. What are the x-intercept(s) of the graph of y + 20 = x2 − x?

(−4, 0) and (−5, 0)

(−4, 0) and (5, 0)

(4, 0) and (−5, 0)

(4, 0) and (5, 0)

Answer 1

Oh I got the 1st one already:) I just need help with the second one

Answer 2

so you have
3x^2 +14x +8
(3x+2)(x+4) = 0

Answer 3

Yupp. I need help with the 2nd one though

Answer 4

when y = 0 then you have

0 + 20 = x^2 - x
0 = x^2-x-20 now you can solve

Answer 5

you understand ?

Answer 6

(x-5)(x+4)
so
(4, 0) and (−5, 0)

Answer 7

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

Answer 8

Ohhhh yeah I forgot to do that :) Thank you! Can you help me with another problem?

Answer 9

What are the exact solutions of x2 − x − 4 = 0?

a. x = the quantity of negative 1 plus or minus the square root of 15 all over 2

b. x = the quantity of 1 plus or minus the square root of 15 all over 2

c. x = the quantity of 1 plus or minus the square root of 17 all over 2

d. x = the quantity of negative 1 plus or minus the square root of 17 all over 2

Answer 10

@ivettef365

Answer 11

use quadratic equation

Answer 12

http://www.mathwarehouse.com/quadratic/quadratic-formula-calculator.php

Answer 13

did you get it??

Answer 14

??

Answer 15

No i didnt :( Can you tell me the answer please?

Answer 16

did you try the website

Answer 17

what do i put in the sqares?

Answer 18

1, 1, and -4?

Answer 19

@ivettef365 I got it Thank you! :)

Answer 20

I got c, hope you had the same :)