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inn [45]
3 years ago
15

Sydney was asked whether the following equation is an identity: (2x^2-18)(x+3)(x-3)=2x^4-36x^2+162

Mathematics
2 answers:
weqwewe [10]3 years ago
4 0

Answer:

Any value of x x makes the equation true. All real numbers Interval Notation: ( − ∞ , ∞ ) .

Hatshy [7]3 years ago
4 0

Answer:

Yes it is.

See below.

Step-by-step explanation:

(2x^2-18)(x+3)(x-3)

= (2x^2 - 18(x^2 - 9)

= 2x^4 - 18x^2 - 18x^2 + 162

= 2x^4 - 36x^2 + 162.

The left side transforms to the right side so it is an identity.

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3 years ago
What is midpoint of A(2, 3) and B(-2, 5)?
Elis [28]

Answer:

The midpoint of A and B is (0, 4).

Step-by-step explanation:

Use the midpoint formula, ((x₁ + x₂)/2 , (y₁ + y₂)/2)

First, solve for the x part.

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So the x-coordinate of the midpoint is 0.

Then, solve for the y part.

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So the y-coordinate of the midpoint is 4.

7 0
3 years ago
The diameter of a circle is 16 in . Find its circumference in terms of pi?
77julia77 [94]

Answer:

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or

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5 0
3 years ago
What is the value of x? Please provide an explanation, thanks!
Novosadov [1.4K]

Answer:

28

Step-by-step explanation:

What you do is add up 42 and 76, then you subtract that from 180, because all triangles add up to 180. the subtracted amount is what z equals. Then since its a straight line you know it adds up to 180. You add z (62) and 90 because its a right angle. then you subtract 180 by 152 to get 28.

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2 years ago
Find the value of f(x), when x=4
OleMash [197]

Answer:

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