Question

Racionalize o denominador e simplifique:

31 ------- 4√2 -1

Answer 1

31/ ( 4V2 - 1)   = [31(V2+1)] /[ 4 V2 - 1)(V2 +1)]  = (31V2 +1)/ [ 4 *(2-1)]
=( 31V2 + 1 )/ ( 4 * 1 )  = 31V2-1 / 4  ****