The area of a triangular-shaped mat is 18 square feet and the base is 3 feet find the height

This is my question~~ ( r ^ 4 - 2r ^ 3 - 23 r ^ 2 - 4r - 32)÷(r+4) ~~ i must use long division to solve it : / i was wondering if anyone world like to solve it. and if so, share step-by-step explanations! you! ❤

What is the solution to the equation below? 3/x-2+6=square root x-2 +8

Will mark name all segments skew to bc