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3 years ago

(2r^3-5r) - (r^3+5r)

Mathematics

1 answer:

kotykmax [81]3 years ago

4 0

Answer:

r^3-10r

Answer Explanation:

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Express the product in simplest form.

Dmitry [639]

The product in simplest form is (x - 4)

Solution:

Given expression is:

$\frac{8}{2x+8} \times \frac{x^2-16}{4}$

We have to find the product in simplest form

In the given expression,

2x + 8 = 2(x+ 4)

We know that,

$a^2-b^2=(a+b)(a-b)$

Therefore,

$x^2-16 = x^2-4^2 =(x+4)(x-4)$

Substitute these in given expression

$\frac{8}{2(x+4)} \times \frac{(x+4)(x-4)}{4}$

Cancel the common factors,

$\frac{8}{2(x+4)} \times \frac{(x+4)(x-4)}{4} = x - 4$

Thus the product in simplest form is (x - 4)

8 0

3 years ago

I have no clue how to do this problem.

Sindrei [870]

Think about c/3 =4/1 and apply the cross multiplication rule since those two fractions are equal.
We get c•1= 3•4
c=12

7 0

4 years ago

1/3 / 1/2 in a fraction form

ratelena [41]

Answer:

Step-by-step explanation:

2/4 5/6

7 0

3 years ago

Please help..... Simplify each equation.

dybincka [34]

A) this is the simplified form
$( {x}^{3} + 3 {x}^{2} - 6) + ( {x}^{2} - x + 7) \\ = {x}^{3} + 3 {x}^{2} - 6 + {x}^{2} - x + 7 \\ = {x}^{3} + 4 {x}^{2} - x + 1$
b)
$(5 {x}^{2} - 4x + 7) - ( {x}^{2} - 2x - 5) \\ = 5 {x}^{2} - 4x + 7 - {x}^{2} + 2x + 5 \\ = 4 {x}^{2} - 2x + 12$

8 0

3 years ago

Pls answer this questionnnn

pickupchik [31]

Jo makes 170 minutes call. There are 150 free ones
170 - 150 = 20
20 minutes are "what Jo has to pay"
Jo sends 182 texts. There are 150 free ones
182 - 150 = 32
32 texts are "what Jo has to pay"

Monthly charge = 16p, 13p for each extra minute, 15p for each extra text.
13(20) = 260p
15(32) = 480p

480p + 260p + 16 = 740p + 16

740p + 16 is your answer (if p = pounds, add 16 to it, i'm not sure what p stands for though. If it is cents, divide 100 from 740 and take out the p, then add total to 16 to get answer.)

hope this helps

4 0

3 years ago