Answer:
12x^3 + 19x^2 +x - 5
Step-by-step explanation:
(3x^2 + x - 1 ) (4x + 5)
12x^3 + 15x^2 + 4x^2 + 5x - 4x - 5 use the Distributive
Property* to multiply
each term by each other
term.
12x^3 + 19x^2 +x - 5 simply
*Distribute the first number to 4x, and then by 5. Then distribute x to 4x and 5, and distribute -1 to 4x and 5. By distribute I mean multiply.
