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4 years ago

Factor this expression completely 9x^2- y^2

Mathematics

2 answers:

Nina [5.8K]4 years ago

7 0

Answer:

(3x - y)(3x + y)

Step-by-step explanation:

Both 9x^2 and y^2 are perfects squares.

The rule for factoring perfect squares is a^2 - b^2 = (a - b)(a + b).

Here, factoring (3x)^2 - y^2 results in (3x - y)(3x + y).

Neporo4naja [7]4 years ago

6 0

(3x-y)(3x+y) is the answer to the question

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The average of any two consecutive even numbers in an even number. Find a counterexample.

pishuonlain [190]

Answer:

2 and 4

Step-by-step explanation:

2+4 = 6

6/2 = 3

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3 years ago

400 reduced by 3 times my age is 163

Blababa [14]

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Add 3x to both sides.

400 = 163 + 3x

Subtract 163 to both sides.

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3 years ago

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Answer:

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Step-by-step explanation:

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3 years ago

Find the value of x A.)25 B.)140 C.)5 D.)1

Vlada [557]

Answer:

25 = x

Step-by-step explanation:

The angles are vertical angles and vertical angles are equal

5x+15 = 6x -10

Subtract 5x from each side

5x-5x+15 = 6x-5x -10

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Add 10 to each side

15+10 = x-10+10

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5 0

3 years ago

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Any answers I need help

natulia [17]

Answer:

(A) 21

Step-by-step explanation:

5x-15 needs to equal 90 since it is a right angle and 21 makes that true

$(5*21)=105\\105-15=90$

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2 years ago

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