Which of the following is equivalent to 2(x² − x) + 3(x² − x)?

The correct answer is: x⁵ − 5x

Hint
○        The concept used in this question is of additon of polynomials.
○        Arrange the term in the decreasing order of their power.
○        To add polynomials  simply add any like terms together.
○        Like terms are terms whose variables and exponents are the same.
Step by step explanation:
○        Given:
The expression:   2(x² − x) + 3(x² − x)
○        Step 1:
○        Simplify the expression
2(x² − x) + 3(x² − x)
2x² - 2x + 3x² - 3x
○        Step 2:
○        Arrange the term in the decreasing order of their power
∴  2x² + 3x² - 2x - 3x
5x² - 5x
Hence, the polynomial equivalent to expression 2(x² − x) + 3(x² − x) is
5x² - 5x.