Answer:
x³ + x² - 6x
Step-by-step explanation:
The standard form of a polynomial is [tex]ax^2 + bx + c[/tex] written in descending order by exponents on the base. To write the expression (x^2+3x)(x-2) in standard form, multiply the factors using the distributive property and combining like terms.
(x^2+3x)(x-2)
x³ + 3x² - 2x² - 6x
x³ + x² - 6x