Question

I need help with my last question!!!! I will give medal!!!!


Part A: The area of a square is (16x^2 -8x+1) square units. Determine the length of each side of the square by factoring the area expression completely. Show your work.

Part B: The area of a rectangle is (81x^2 -4y^2) square units. Determine the dimensions of the rectangle by factoring the area expression completely. Show your work.

Part C: The volume of a rectangular box is (x^3 -9x^2 -4x+36) cubic units. Determine the dimensions of the rectangular box by factoring the volume expression completely. Show your work.

Answer 1

\[x^2\left( x-9 \right)-4\left( x-9 \right)=0,\left( x-9 \right)\left( x^2-4 \right)=0\]
\[\left( x-9 \right)\left( x+4 \right)\left( x-2 \right)=0\]

Answer 2

correction
write x+2 in place of x+4

Answer 3

if x is positive
then dimensions are x+2,x-2,x-9
don't write =0 just write = at every step.