chesileeweber787
chesileeweber787 chesileeweber787
  • 11-08-2020
  • Mathematics
contestada

A student says that the function f (x) = –x² – 9 has the x-intercepts (-3,0) and (3,0). Is the student correct? If not, expl.
why. ​

Respuesta :

rococo908
rococo908 rococo908
  • 11-08-2020

Answer:

No

Step-by-step explanation:

The student is wrong because the function has no solutions.

You cannot factor it because the x² is negative.

If it was x² - 9 instead, you could factor it into (x-3)(x+3) which would get you the x-intercepts (-3,0) and (3,0).

But instead, -x² - 9 cannot be factored at all and has no x-intercepts/solutions.

Answer Link

Otras preguntas

Explain why Mercury,Venus,and Mars are not likely to support life as we know it.
What is the nth term in the sequence: 4, 7, 12, 19, 28 Please show working out
solve for x of (8x+30)°(4x+18)°
How do bacteria that live deep below the ocean’s surface make food? a. by cellular respiration b. by chemosynthesis c. by photosynthesis d. They eat other organ
what were dr seuss strengths and struggles
A number with two decimals places is multiplied by a whole number. The product has only two digits. How can you follow the correct procedure for placing the dec
(a + 2b + 3c) − (4a + 6b − 5c) is equivalent to? Can you please explain with some details?
which structure of a bird is correctly paired with its function
Simplify the expression. 11c + 3(-5c + 4d)
How would I answer this equation 5y - 2y = 3y + 2