What is the standard form of `(x+3y)(3x-y)`?

Related questions

• What is a Polynomial?
• How do you rewrite a polynomial in standard form?
• How do you determine the degree of a polynomial?
• What is a coefficient of a term?
• Is `x^2+3x^{\frac{1}{2}}` a polynomial?
• How do you express `-16+5f^8-7f^3` in standard form?
• What is the degree of `16x^2y^3-3xy^5-2x^3y^2+2xy-7x^2y^3+2x^3y^2`?
• What is the degree of the polynomial `x^4-3x^3y^2+8x-12`?
• What is the difference between a monomial, binomial and polynomial?
• How do you write `y = 2/3x + 5` in standard form?