Pls help i will mark brainiest for best answer

Show your workcan a right triangle have this sides? *how to prove it without using the pythagorean theorema*

Find the interior angle of a regular polygon which has 6 sides

Plz 20 points polynomials 1: subtract and simplify (–y^2 – 4y – 8) – (–4y^2 – 6y + 3) 2: multiply and simplify 2x^2 y^3 z^2 · 4xy^4 x^2 3: multiply and simplify (x – 4) (x2 – 5x – 6)