Question

Simplify the algebraic expression: 7x2 + 6x – 9x – 6x2 + 15.

A) 13x2 + 3x + 15

B) x2 + 15x + 15

C) x4 – 3x + 15

D) x2 – 3x + 15

Answer 1

D

Explanation:

To simplify the algebraic expression 7x^2 + 6x - 9x - 6x^2 + 15, we can combine like terms:

7x^2 - 6x^2 + 6x - 9x + 15

Combining the terms with the same exponent:

(7x^2 - 6x^2) + (6x - 9x) + 15

Simplifying:

x^2 - 3x + 15

Therefore, the simplified algebraic expression is:

x^2 - 3x + 15

The answer is option D) x^2 - 3x + 15.