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Nikitich [7]
3 years ago
8

Which real numbers are zeroes of the function f(x)=2x^3-x^2-8x+4

Mathematics
2 answers:
tatuchka [14]3 years ago
7 0

Answer:

2, -2 and 1/2

Step-by-step explanation:

As the the first coefficient is 2 and the last number is 4  1/2, 2, -2 seem likely zeros ( By the rational roots theorem).

f(2) =  2*8 - 4 -16 + 4 = 0 so 2 is a zero.

f(-2) = -16 - 4 +16 + 4 = 0  so -2 is a zero

f(1/2) = 2*1/8 - 1/4 - 4 + 4 = 0 so 1/2 is the other zero.

Since the highest degree is 3  the maximum number of zeroes is 3.

earnstyle [38]3 years ago
6 0

Answer:

Try math

way if you need help on apex

Step-by-step explanation:


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<u>Answer</u>: The two angles are : 30° and 60°

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Given : x and 5x are supplementary angles

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c) Two angles are said to be complementary if their sum is equal to 90°

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7 0
3 years ago
The dean of admissions in a large university has determined that the scores of the freshman class in a mathematics test are norm
Tema [17]

Answer:

1

Step-by-step explanation:

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Leno4ka [110]
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