Question

1 )Before simplifying, how many terms are there in the expression 2x - 5y + 3 + x?

Answer 1

Answer

1)4

2)5b

3)4x 2

4)7x 2

5)y-x+z

(5 is nuber 10 on the assignment)

I hope that this helps :)

Answer 2

Answer:

1. Option B, i.e., 4

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

3. Option B, i.e., $4x^2$

4. Option A, i.e, $7x^2$

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

Step-by-step explanation:

1.

The given expression is

$2x-5y+3+x$

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 $4x^2$ is not a like term because the degree of x is 2.

Therefore, $4x^2$ cannot be combined with the others. The correct option is B.

4.

The given expressions are

$7x^2$

$4x+3x$

It can be rewritten as

$(4+3)x$

$7x$

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

Therefore, All of the following are equivalent except $7x^2$. 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.