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2 years ago

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]2 years ago

4 0

Answer:

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

Hatshy [7]2 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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point M with coordinates (3,4) is the midpoint of the line AB and A has the point (-1,6). what is the point of B?

irina [24]

Answer:

B = (7, 2)

Step-by-step explanation:

B = 2M -A

B = 2(3, 4) -(-1, 6) = (2·3-(-1), 2·4-6)

B = (7, 2)

_____

The expression for the other end point, B, comes from the equation for the midpoint.

M = (A +B)/2

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2 years ago

Devon wants to write an equation for a line that passes through 2 of the data points he has collected. The points are (8, 5) and

ser-zykov [4K]

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$7x - 10y = 3
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For (8, 5):
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Answer:
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2 years ago

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Omar has a gift card for $25 at a clothing store. He wants to buy socks that costs $4 per pair. He also has a coupon for $5 off

bezimeni [28]

Answer:

p= 7 socks

Step-by-step explanation:

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2 years ago

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2 years ago

Adela is buying a DVD player on layaway for 210$. If she makes a down payment of 30$ ad pays 15$ each week. How many weeks will

Diano4ka-milaya [45]

Answer:

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Step-by-step explanation:

Given in the question that,

total cost of DVD bought by Adela = $210

Step 1

Adela makes a down payment of $30

$210 - $30 = $180

Remaining cost = $180

Step 2

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2 years ago