what is 7t-2st+5t=

and what is 10 x y+2y-x^2+2xy

i dont under stand

you don't give much indication of what you're after

7t-2st+5t = (7+5)t - 2st = 12t - 2st = 2t(6-s)
10xy+2y-x^2+2xy = 12xy + 2y - x^2
You can factor that as
x(12y-x) + 2y
or
2y(6x+1) - x^2

If you want more than that, provide a bit more context.

i dont understand im in 8th grad and i feel so stupid to ask for help i realy just DONT GET IT math is not my strong sute

To solve the equation 7t - 2st + 5t, first, let's combine like terms. This means adding or subtracting the same variables that have the same exponents. In this equation, the like terms are the terms with the variable "t".

So, 7t + 5t can be simplified to (7 + 5)t = 12t.

The second term, -2st, does not have any other terms with the variable "t". So, we leave it as -2st.

Therefore, the simplified form of the equation 7t - 2st + 5t is 12t - 2st.

Now, let's move on to the second equation, 10xy + 2y - x^2 + 2xy. Here, we have both the variables "x" and "y".

The first term is 10xy. Since it has the variables "x" and "y" with no other terms having the same variables, we leave it as it is.

The second term is 2y, which only contains the variable "y" with no other terms with the same variable. Therefore, we leave it as 2y.

The third term, -x^2, has no other terms with the variable "x". So, we leave it as -x^2.

Lastly, we have 2xy. This term has both "x" and "y" with no other terms with the same variables. Therefore, we leave it as 2xy.

Putting it all together, the simplified form of the equation 10xy + 2y - x^2 + 2xy is 10xy + 2y - x^2 + 2xy.