Europa2433 FREAKING STOP BRO IT TOO MUCH STOP DETELING MY STUFF BEFORE I DO YOURS

Complete the square to determine the minimum or maximum value of the function defined by the expression. x2 − 12x − 2 a) maximum value at 38 b) minimum value at 38 c) maximum value at −38 d) minimum value at −38

What is the maximum total area that 450cm of string can enclose if it is used to form perimeters of two adjoining rectangles as shown?

I’m still confused on how to work the percentages