Find $t$ if the expansion of the product of $x^3 - 4x^2 + 2x - 5$ and $x^2 + tx - 7$ has no $x^2$ term.
This was asked and answered here:
https://web2.0calc.com/questions/find-t-if-the-expansion-of-the-product-of-x-3-4x#r1
