← Laskulait · Lukion taulukot · Rationaalilausekkeet →
( a − b ) ( a + b ) = a 2 − b 2 {\displaystyle (a-b)(a+b)=a^{2}-b^{2}}
( a + b ) 2 = a 2 + 2 a b + b 2 {\displaystyle (a+b)^{2}=a^{2}+2ab+b^{2}}
( a − b ) 2 = a 2 − 2 a b + b 2 {\displaystyle (a-b)^{2}=a^{2}-2ab+b^{2}}
