Part A: The area of a square is (4x2 − 12x + 9) 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 (16x2 − 9y2) square units. Determine the dimensions of the rectangle by factoring the area expression completely. Show your work. (5 points)

Step-by-step explanation:

4x² - 12x + 9 = ?

4x² - 12x + 9 = 4x²- 6x - 6x + 9 = 2x

2x(2x - 3) - 3(2x - 3)

(2x - 3)(2x - 3)

(2x - 3)²

Welcome Brazil

(8-(4+3)+3

4-7+3

-3+3

3-3

0

Step-by-step explanation:

This much only answer

Thank you

hello from mrbilldoesmath!

answer:

25x^2 + 90x + 84

discussion:

mn(x) = m(n(x)) = m( 5x + 9) =

(5x + 9)^2 + 3 =>

25x^2 + 90x + 9^2 + 3 =

25x^2 + 90x + 84                 (as 9^2 = 9*9 = 81)

which is the second choice

regards,  

mrb

p.s.   i'll be on vacation from friday, dec 22 to jan 2, 2019. have a great new year!

then say something, tell them they won’t respect you if you don’t even have respect for your self sweetheart you need to lay it on them, all of it : )