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(08.05, 8.06 MC)
Part A: The area of a square is (25x2 - 40x + 16) square units. Determine the length of
each side of the square by factoring the area expression completely. Show your work. (5
points)
Part B: The area of a rectangle is (81x2 - 116) square units. Determine the dimensions of
the rectangle by factoring the area expression completely. Show your work. (5 points)
(10 points)

Respuesta :

rupsgos

Answer:

Part A: 25x^2-40x+16=(5x-4)^2 because it is in the form of a^2-2ab+b^2 so you know it's a square for sure. So just find the square root of the first and last term to make the equation.

Part B:  (81x^2-116)=(9x-[tex]\sqrt{116}[/tex])(9x-[tex]\sqrt{116}[/tex])

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