Question

How many terms are there in the expression 2x -5y + 3 + x?

Answer 1

`color(green)4` terms

Explanation:

The terms of a mathematical expression are the sub-components which are separated by plus or minus signs,

Thus
`color(white)("XXX")underbrace(2x)_(1)- underbrace(5y)_2+underbrace(3)_3+underbrace(x)_4color(white)(underbrace("XXXX")_color(black)(=4" terms"))`

Note that by combining the terms `2x` and `x` this could be reduced to an expression in `3` terms.