Add (3x^2 - x + 2) plus (4x^2 + 3x - 1)?

you add like terms:

3x^2 + 4x^2 = 7x^2
- x + 3x = 2x
2 + -1 = 1
so your FINAL ANSWER FOR THIS ONE IS: 7x^2 + 2x +1

for the other one you do the same thing:

2t^2 + 3t^2 = 5t^2
5t + -4t = t
-7 + 6 = -1

so your FINAL ANSWER for this one is: 5t^2 + t -1

there ya go

hope i helped!!

Question 1
7 x ² + 2 x + 1

Question 2
5 t ² + t - 1

a million. y = a million/2 x + 3 merely replace altitude values and make advantageous in case you get the corresponding rainfall cost 2. y = |x – 3| + 4 merely replace x values and validate in case you get the corresponding y values interior the graph 3. no answer in case you multiply the 1st equation with 3 then you certainly get 3x + 12y = 9 2d equation is 3x + 12y = 5 in case you subtract the two equations 0x + 0y = 4 for this reason you are able to not sparkling up x and y 4. y = 3 merely subtract the two equations, you will get y = 3 5. (4x + 2)(x + a million) 4x * x = 4 x2 4x * a million + 2 *x = 6x 2 * a million = 2 6. y = x2 – 8x + 13 (x-4)2 - 3 = (x2 - 8x + sixteen) -3 = x2 -8x +13 7. x = 4, x = –3 x2 - x - 12 = (x-4) (x+3) x=4 | x=-3

Combine "like-terms"

Definition of like-term: terms with same variables and their powers are the same.

For example, 3x^2 and 4x^2 are like-terms
2t^2 and 3T^2 are like-terms
4x^2 and 3t^2 are not like-terms because they have different variables.

Combine like terms:

3x^2 + 4x^2 = 7x^2
- x + 3x = 2x
2 + (-1) = 1
Answer is 7x^2 + 2x +1


Q2:
2t^2 + 3t^2 = 5t^2
5t + (-4t) = t
-7 + 6 = -1

Answer is: 5t^2 + t -1

7x^2 + 2x + 1 for the first one
5t^2 + t - 1 for the second one

lol u seem like not learning anything for tomorrow
7x^2 + 2x + 1
5t^2 +t -1

combine like terms
(2t^2 + 3t^2) + (5t - 4t) + (-7 + 6)
simplify
5t^2 + t - 1

All your questions are very basic, you do have a textbook don't you?