Question

algebra 1 really hard problems plz help ASAP

Answer 1

The first problem, 2., is a sum of quantities. First, just remove both sets of parentheses since they are unnecessary. Then combine like terms. Like terms are terms that have the same variable parts.

Answer 2

Add the like terms together to get the final answer

Answer 3

The second problem, 4., is a subtraction. First, remove the first set of parentheses since they are unnecessary. Then to remove the second set of parentheses, distribute the negative outside the second set of parentheses by changing every sign inside the parentheses. Then just collect like terms as in problem 2.

Answer 4

What answer would you get for the 1st problem?

Answer 5

I am really trying to do the problem but I am still kind of confused

Answer 6

Write one step at a time and I'll guide you.
For problem 2, rewrite it without parentheses. Do it and show it.

Answer 7

Isn't that 4? How about starting with 2?

Answer 8

Ok so for the 1st problem You have (3x^2)+(4x^2)

Now add the other like terms in the same manner but notice that you have a (-8r)
Add (7r)and (-8r)

Add the last like terms and pay attention to the signs.

What would the final answer be?

Answer 9

wouldn't that be -1? when u add (7r)and (-8r)

Answer 10

-1r

Answer 11

Yes now solve for the last like term and combine the results together

Answer 12

That's good.
The next step is to combine like terms. Like terms have the same variable parts.
3r^2 + 7r + 1 + 4r^2 – 8r – 2
It may make it easier for you to see which terms are being combined together by grouping the like terms together.
3r^2 + 4r^2 + 7r - 8r + 1 - 2

Answer 13

Now we combine the like terms together to get the final answer
7r^2 - r - 1
This is the answer to problem 2. above.

Answer 14

Now can you try and solve for problem 4 and let's see the answer you come up with

Answer 15

okay I think I get it.......let me try 4

Answer 16

To solve problem 4., pay attention to my instructions above. I'll repeat them here so you don't need to look for them.

Answer 17

The second problem, 4., is a subtraction. First, remove the first set of parentheses since they are unnecessary. Then to remove the second set of parentheses, distribute the negative outside the second set of parentheses by changing every sign inside the parentheses. Then just collect like terms as in problem 2.

Answer 18

okay but what sign do i change it to?

Answer 19

Ok but look at the signs for the terms in the 2nd parenthesis and remember you are subtracting the terms

Answer 20

positive to negative and negative to positive

Answer 21

ok thx hold on

Answer 22

2 negatives make a positive remember that