Question

Se a = (-1)100, b= (+1)100, c = (-1)101 e d = (+1)101, calcule o valor de a+b+c+d.​

Answer 1

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$\sf{a=(-1)^{100}=1}\\\sf{b=(+1)^{100}=1}\\\sf{c=(-1)^{101}=-1}\\\sf{d=(+1)^{101}=1}\\\sf{a+b+c+d=1+\diagdown\!\!\!1-\diagdown\!\!\!1+1}\\\huge\boxed{\boxed{\boxed{\boxed{\sf{a+b+c+d=2}}}}}$