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horsena [70]
3 years ago
13

How to factorize a)x³-4x b) 9t²-u² hurry up

Mathematics
2 answers:
Bas_tet [7]3 years ago
7 0

A) the greatest common factor is how to factors something

for this case x is the gcf

x(x^2 - 4) is the answer

B) Cannot be factored there is no common factor.

Nesterboy [21]3 years ago
6 0
A) gcf is x

x(x^3/x - 4x/x)
x(x^2 - 4)
x(x^2 - 2^2)
x(x+2)(x-2)

b) 3t^2 -u^2

(3t+u)(3t-u)
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I need help please.
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Pretty sure the answer is 20
Hope this helps :)
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1200 seconds divided by 3600=

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3 years ago
What's the answer to this? and please explain.
vichka [17]
<h3>Answer: No, there isn't enough ribbon</h3>

===========================================================

Use this formula

a & b/c = (a*c+b)/c

to convert from a mixed number to an improper fraction

So,

a & b/c = (a*c+b)/c

3 & 3/4 = (3*4+3)/4

3 & 3/4 = 15/4

---------------------------------------------------

Next, we add the fractions 15/4 and 5/6. The denominators aren't the same, so we can't add right away. We need to get the denominators to the LCD.

In this case, the LCD is 4*6 = 24

  • The fraction 15/4 becomes 90/24 after multiplying top and bottom by 6.
  • The fraction 5/6 becomes 20/24 after multiplying top and bottom by 4

Now we can add the fractions:

90/24+20/24 = (90+20)/24 = 110/24

---------------------------------------------------

So far, we've added the 3&3/4 portion to the 5/6 portion to get the result 110/24

The last thing to do is to add on the two 1/3 ft pieces, which means we're adding on 2/3 of a foot

2/3 = 16/24 after multiplying top and bottom by 8

Add this to the result of the last section

110/24+16/24 = (110+16)/24 = 126/24

---------------------------------------------------

From here, we convert the improper fraction 126/24 to decimal form

Using a calculator, you should find that 126/24 = 5.25

The result is larger than 5, which means she used too much ribbon. There won't be enough ribbon to do everything she wants to do.

---------------------------------------------------

The shortcut we can take is to type the following into the calculator

3+3/4+5/6+2/3

doing so should lead to 5.25

5 0
3 years ago
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Answer:

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<h3><u>PLEASE MARK ME BRAINLIEST</u></h3>
4 0
3 years ago
How to graph 5x+3y=15​
maxonik [38]

Answer:

Step-by-step explanation:

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Step-by-step explanation:

12 ÷ 2 is 6 and 14 ÷2 is 7 . You can't really simplify 14 by any other whole number besides 2 or 7 .

6 0
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