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What are the y and xintercepts for #f(x) = 2x^3  6x^2  20x#?

A manufacturer of shipping boxes has a box shaped like a cube. The side length is
(5a + 4b). What is the volume of the box in terms of a and b? Show your work.

How do you find the vertex for #y=x^2+6x+7#?

How do you solve #8x10=x^27x+3# using the quadratic formula?