1)before simplifying, how many terms are there in the expression 2x - 5y + 3 + x? 3 4 5 6 2) which of the terms cannot be combined with the others? 3a a 5b -2a 3) which of the terms cannot be combined with the others? -3x 4x 2 x 11x 4) all of the following are equivalent except 7x 2 4x + 3x (4 + 3)x 7x 5) which of the following is not equivalent to x - y + z? x + z - y z + x - y y - x + z z - y + x

1. Option B, i.e., 4

2. Option C, i.e., 5b

3. Option B, i.e.,

4. Option A, i.e,

5. Option C, i.e., y - x + z

Step-by-step explanation:

1.

The given expression is

We need to find the number of terms in the given expression.

Here, the terms are 2x, -5y, 3 and x.

Therefore, the number of terms is 4. Option B is correct.

2.

If two or more terms have same variable of same degree, then they are called like terms.

3a, a and -2a are like terms but 5b is not a like term.

Therefore, 5b cannot be combined with the others. The correct option is C.

3.

Similarly,

-3x, x and 11x are like terms but is not a like term because the degree of x is 2.

Therefore, cannot be combined with the others. The correct option is B.

4.

The given expressions are

It can be rewritten as

It means expression 4x+3x, (4+3)x and 7x are equivalent.

Therefore, All of the following are equivalent except . Option A is correct.

5.

The given expression is

x - y + z

It can be rewritten as

x + z - y

z + x - y

z - y + x

All of the following are equivalent except y - x + z. Therefore, option C is correct.

answer: -2+√x,-2-√x

i hope this , i don't know if you're looking for a pair or not.