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Given expression: 7x + 4 – 3x + 10

Since the variable ‘x’ is not placed in the denominator hence yes, the given expression is a polynomial.

In order to simplify the above expression, we have to combine the like terms.

Like terms are the terms which are either plain numbers or are the terms which contain the same variable.

This implies 7x+ 4- 3x+ 10 = 7x- 3x+ 4+ 10==>4x + 14 is the simplified form!

Given expression: 2x+ 3y+ 5x- 9y- 5

Since the variables ‘x’ or ‘y’ is not placed in the denominator hence yes, the given expression is a polynomial.

In order to simplify the above expression, we have to combine the like terms.

This implies 2x + 3y + 5x- 9y- 5= 2x + 5x + 3y- 9y- 5->7x- 6y - 5 is the simplified form!