Question

Simplify the expression
1.7m^2 + 6.5n - 4n + 2.5m^2 - n

A. 4.2m^2 + 1.5n
B. 4.2m^2 - 1.5n
C. 1.5m^2 - 4.2n
D. 1.5m^2 + 4.2n

Answer 1

1.7m^2 + 6.5n - 4n + 2.5m^2 - n

RE WRITE IT

1.7m^2 + 2.5m^2 + 6.5n - 4n - n

ADD THE LIKE TERMS

Answer 2

How?

Answer 3

What like terms I mean.

Answer 4

START BY:

1.7m^2 + 2.5m^2

THEN:

6.5n - 4n

Answer 5

Im not even sure.

Answer 6

so:

1.7 + 2.5 = 4.2

so:

4.2m^2

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

6.5n - 4n

so:

2.5n

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

therefore:

4.2m^2 + 2.5n - 1n

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

so:

4.2m^2 + 1.5n

Answer 7

Do you understand? @VinnyT ?

Answer 8

I don't..

Answer 9

I dont't even know how to figure that out.. it so late but I gotta get this done. kinda angry.\:

Answer 10

well i kinda of explained it above...

take a look at it...

then if you dont understand and/or have questions just ask away..

Answer 11

Yeah.. I said I don't know how to figure it out.\:

Answer 12

Oh wow.

Answer 13

it is just simple addition and subtraction and combining like terms and simplifying :)

Answer 14

Sorry man.. It's so late and my brains fried atm didn't see you put the answer and how to do it. I thought you wanted me to figure out the bottom part.

Answer 15

i explained it...

Answer 16

Yeah I know. I didn't realize that until now. I thought you wanted me to figure out 4.2m^2 + 1.5n for the final answer so I was like Im not even sure how to do that, but didn't realize when you explained it all that's how you came up with the answer.

Answer 17

1.7m^2 + 6.5n - 4n + 2.5m^2 - n

RE WRITE IT

1.7m^2 + 2.5m^2 + 6.5n - 4n - n

ADD THE LIKE TERMS

-----------------------------------
1.7m^2 + 2.5m^2 (these are like terms, so just add them)

----------------------------------------------------
6.5n - 4n - n (these are like terms, so just add them and subtract them as it says)

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

Answer 18

Yah I understand now, thanks a lot!

Answer 19

yeah yw :)