3015
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It is an algebraic expression that can be simplified to: 45x -16
(5x+4)(9x+9) FOIL First (5x*9x=45x**2) Outside (5x*9=45x) Inside (4*9x=36x) Last (4*9=36) 45x**2+45x+36x+36 45x**2+81x+36 9(5x**2+9x+4x)
0.4444
y = 5x^3 - 45x is a polynomial equation that crosses the y axis at x=3.
(9x)2 +9x/(45x)2 +81= 9+9x/86