(√5-√10)^2+ (√2 + 5)^2 = (X)^3 - 22
X=?

• on solving the left hand side we get 42
  now-
  (x)^3 - 22= 42
  (x)^3=64
  so
  x=4
• 9 years agoHelpfull: Yes(3) No(1)
• ans:
  expand terms
  5+10-2*sqrt(5)*sqrt(10)+2+25+2*sqrt(2)*5=(x)^3-22
  42-2*sqrt(50)+2*5*sqrt(2)+22=(x)^3
  66-2*sqrt(25*2)+2*5*sqrt(2)=(x)^3
  66-2*5*sqrt(2)+2*5*sqrt(2)=(x)^3
  66=(x)^3 (previous step values cancelled)
  cube root of 66=x
• 9 years agoHelpfull: Yes(1) No(3)
• -3+25=x^3-22
  +22=X^3-22
  22-22=X^3
  X=0
  ans x=0
• 8 years agoHelpfull: Yes(0) No(0)