Question

Se a= (-1)100 e b=(-1)101 , calcule o valor de: a-b , a b

Answer 1

$Resolu\c{c}\~oes \to \left\{\begin{array}{ccc}a-b = (-1)^{100}-(-1)^{101}\\\\a-b = 1-(-1)\\\\\boxed{\boxed{a-b = 1+1 = 2}}\\\\a+b = (-1)^{100}+(-1)^{101}\\\\a+b = 1+(-1)\\\\\boxed{\boxed{a+b = 1-1 = 0}}\end{array}\right$

Espero ter ajudado. =^.^=