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IrinaVladis [17]
2 years ago
8

Find the zeros of the quadratic function: y=x^2-4x-12

Mathematics
1 answer:
TEA [102]2 years ago
8 0

Answer:

x {}^{2}  - 4x - 12 = 0 \\ (x - 6)(x + 2) = 0 \\ x = 6 \:  \: x =  - 2

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I have no idea what im doing
omeli [17]

Answer:

  • x = - 6

Step-by-step explanation:

A hole is an input value that makes both numerator and denominator equal to zero.

<u>Let's factorize the numerator and denominator:</u>

  • 3x² - 108 = 3(x² - 36) = 3(x + 6)(x - 6)
  • x² + 2x - 24 = x² + 6x - 4x - 24 = x(x + 6) - 4(x + 6) = (x - 4)(x + 6)

<u>We have same factor of x + 6:</u>

  • x + 6 = 0
  • x = - 6 is a hole
8 0
2 years ago
When f(x)=-3, what is x?
Anna35 [415]

Answer:

Step-by-step explanation:

For example, if f(x)   =  2x   + 7

      then         f(-3) = 2(-3) + 7

                     f(-3) = 1

3 0
3 years ago
While researching Facts on the planet earth Kate learned that a true earth day is about 23.93 hours long how many hours are in 2
HACTEHA [7]

Answer:

335.02

Step-by-step explanation:

Just multiply 23.93 by 14 which is 2 weeks

4 0
3 years ago
Find the output value of the function. f(x)=5x-8 for f(7)
Molodets [167]

Answer:

27

Step-by-step explanation:

f(x) = 5x - 8

f(7) = 5(7) - 8 = 27

3 0
3 years ago
Read 2 more answers
What is 2(x+6)-6x in simplest form
Novosadov [1.4K]

Answer:

-4x + 12

Step-by-step explanation:

2(x+6)-6x

2x + 12 - 6x

combine llike terms

2x - 6x = -4x

-4x + 12

3 0
3 years ago
Read 2 more answers
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