Question

Your answer should be a polynomial in standard form.
(k2 – 5k – 2)(k2 +2) =

Answer 1

`\left(k^2\:-\:5k\:-\:2\right)\left(k^2\:+2\right)\\k^2k^2+k^2\cdot \:2+\left(-5k\right)k^2+\left(-5k\right)\cdot \:2+\left(-2\right)k^2+\left(-2\right)\cdot \:2\\k^2k^2+2k^2-5k^2k-5\cdot \:2k-2k^2-2\cdot \:2\\k^2k^2-5k^2k-5\cdot \:2k-2\cdot \:2\\k^4-5k^3-10k-4`