Question

Se x = [ ( -1 ) . ( -2 - 1/4) ]² , então x vale : * A) 9/4 B) - 9/4 C) 81/16 D) - 81/16 E) 9/7

Answer 1

x = [ ( -1 ) . ( -2 - 1/4) ]²

x = [ 2 + 0,25 ]²

x = 2,25²

x = 5,0625

C) 81/16

81 / 16 = 5,0625