Why does the world need more food? - Because there’re more people.
Why does the world need more food? - Because there’re more people.
Why does the world need more food? - Because there’re more people.
Why does the world need more food? - Because there’re MORE people.
Why does the world need more food ? - Because there're more people.
(a+b+c)(a2+b2+c2−ab−bc−ac)(a+b+c)(a2+b2+c2−ab−bc−ac)=a3+ab2+ac2−a2b−abc−a2c+a2b+b3+bc2−ab2−abc−ac2=a3+ab2+ac2−a2b−abc−a2c+a2b+b3+bc2−ab2−abc−ac2+a2c+cb2+c3−abc−bc2−ac2+a2c+cb2+c3−abc−bc2−ac2 = a3+b3+c3−3abc
(a+b+c)(a2+b2+c2−ab−bc−ac)(a+b+c)(a2+b2+c2−ab−bc−ac)
=a3+ab2+ac2−a2b−abc−a2c+a2b+b3+bc2−ab2−abc−ac2
=a3+ab2+ac2−a2b−abc−a2c+a2b+b3+bc2−ab2−abc−ac2+a2c+cb2+c3−abc−bc2−ac2+a2c+cb2+c3−abc−bc2−ac2
= a3+b3+c3−3abc
(a+b+c) (a(a+b+c)(a2+b2+c2−ab−bc−ac)(a+b+c)(a2+b2+c2−ab−bc−ac)=a3+ab2+ac2−a2b−abc−a2c+a2b+b3+bc2−ab2−abc−ac2=a3+ab2+ac2−a2b−abc−a2c+a2b+b3+bc2−ab2−abc−ac2+a2c+cb2+c3−abc−bc2−ac2+a2c+cb2+c3−abc−bc2−ac2 = a3+b3+c3−3abc