We know that x > 2 ( or : x ≠ +/- 2 ) We have to factorize the numerator and the denominator: x² - x - 6 = x² - 3 x + 2 x - 6 = x ( x - 3 ) + 2 ( x - 3 ) = ( x - 3 ) ( x + 2 ) x ² - 4 = ( x - 2 ) ( x + 2 )
Esma can fit 3 packages in the box because 20+10+10=30 and 5+2+2=9 so if you add up 9 three times you get 27 and that is the closest number you can get before going over.
