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3 years ago

How do I factor 14x^2-7xy-147y^2

Mathematics

1 answer:

Viefleur [7K]3 years ago

6 0

STEP 1

Equation at the end of step

((14 • (x2)) - 7xy) - (3•72y2)

Equation at the end of step 2

((2•7x2) - 7xy) - (3•72y2)

STEP 3

STEP 4

Pulling out like terms

4.1 Pull out like factors :

14x2 - 7xy - 147y2 = 7 • (2x2 - xy - 21y2)

Trying to factor a multi variable polynomial :

4.2 Factoring 2x2 - xy - 21y2

Try to factor this multi-variable trinomial using trial and error

Found a factorization : (2x - 7y)•(x + 3y)

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What is the length of SR? 9 units 12 units 15 units 18 units

Leviafan [203]

we know that

In the right triangle RSQ

$cos\ S=\frac{RS}{SQ}$

$cos\ S=\frac{RS}{25}$ ------> equation $1$

In the right triangle RST

$cos\ S=\frac{ST}{RS}$

$cos\ S=\frac{9}{RS}$ ------> equation $2$

equate equation $1$ and equation $2$

$\frac{RS}{25}=\frac{9}{RS}\\ \\ RS^{2} =25*9\\ \\ RS=\sqrt{225} \\ \\ RS=15\ units$

therefore

the answer is

the length of SR is $15\ units$

5 0

3 years ago

Read 2 more answers

Mike had 228 dollars to spend on 7 books. After

monitta

Answer:

$30

Step-by-step explanation:

We know that the cost of all of the books was 228 - 18 = 210 dollars because Mike had 18 dollars left over. Assuming that each book cost the same amount, we know that each book costs 210 / 7 = $30.

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4 years ago

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the weight of abes dog can be found using the expression 2(x+3), where x is the number of weeks. the weight of karens dog can be

ivanzaharov [21]

To find this out we can set the expressions equal to each other:

$\sf 2(x+3)=3(x+1)$

Solve for 'x', first distribute:

$\sf 2x+6=3x+3$

Subtract 3 to both sides:

$\sf 2x+3=3x$

Subtract 2x to both sides:

$\boxed{\sf x=3}$

So the answer is yes, after 3 weeks the dogs will be the same weight(because 'x' represents # of weeks).

7 0

3 years ago

Was able to show a and b. but having issues with C.

Arada [10]

I think it would be $81 I’m not positive tho

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3 years ago

What is (4-x^2)(4-x^2) ?

Studentka2010 [4]

Answer:

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Step-by-step explanation:

Use formula (a-b)^2 = a^2-2ab+b^2

now a=4 b=x^2, plug in

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3 years ago