Answer:
[tex]3x^{2}[/tex] + 9x - 5
Step-by-step explanation:
Take the whole rectangle and subtract the middle so
4x^2 + 4x + 1 - (x^2 -5x + 6) which is actually -x^2 + 5x -6
so 3x^2 + 9x -5
(4x²-4x+1)-(x²-5x+6)
Simplify each term.
4x²+4x+1−x²+5x−6
Simplify by adding terms.
3x²+9x−5 = 0
x=−9−√14/16,−9+√14/16
