Question

(-1)²+(-1)³+(-1)⁴+(-1)⁵

Answer 1

${( - 1)}^{2} + ( - 1)^{3} + ( - 1) ^{5} = 1 + ( - 1) ^{3} + ( - 1) ^{5} = 1 - 1 + {( - 1)}^{5} = 1 - 1 - 1 = - 1$