0.4444
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(9x)2 +9x/(45x)2 +81= 9+9x/86
It is an algebraic expression
3015
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)