Question

polynomials operations - review for test#2 (adding simplify the following expression, $6a^2 - 9a + 15 - 5a^2 + 10a - 15$ $\circ$ $a^2 - a$ $\circ$ $-a^2 + a$ $\circ$ $-a^2 - a$ $\circ$ $a^2 + a$

Explanation:

Step1: Combine like terms for \(a^2\)

\(6a^2 - 5a^2 = (6 - 5)a^2 = a^2\)

Step2: Combine like terms for \(a\)

\(-9a + 10a = (-9 + 10)a = a\)

Step3: Combine like terms for constants

\(15 - 15 = 0\)

Step4: Combine all results

\(a^2 + a + 0 = a^2 + a\)

Answer:

\(a^2 + a\) (corresponding to the option with this expression, e.g., if the last option is " \(a^2 + a\)", then the answer is that option with its identifier. Assuming the last option is D. \(a^2 + a\), then: D. \(a^2 + a\))