If 1.5 x= 0.04 y, then the value of (y-x) (y+x) is:

• 1.5 x= 0.04 y
  y= x*150/4=x*75/2
  
  so (y-x) (y+x) = y^2-x^2= (x*75/2)^2 -x^2=(x^2)*5621/4
• 11 years agoHelpfull: Yes(7) No(11)
• let us assume x=1 and y=37.5
  then 1.5(x)=0.04(y)
  that is 1.5(1)=0.04(37.5)
  = 1.5 =1.5
  therfore from given equation (37.5-1)(37.5+1)
  =(36.5)(38.5)
  =1405.25
  
• 10 years agoHelpfull: Yes(5) No(5)
• 1.5 x=0.04 y
  x/y=0.04/1.5. (x=0.04, y=1.5)
  (y-x)(y+x)=(1.5-0.04)(1.5+0.04)
  =(1.46)(1.54)=2.2484
  so the answer is 2.2484
• 9 years agoHelpfull: Yes(3) No(1)
• 73*77/(2*2)
• 10 years agoHelpfull: Yes(1) No(2)
• 2.24
  1.56*1.46
• 9 years agoHelpfull: Yes(1) No(2)
• x=1/25*2/3y=2y/75
  x=2y/75
  x/y=2/75
  let x=2 and y=75then
  73*77=5621
• 9 years agoHelpfull: Yes(1) No(1)
• 1.5x=0.04y,
  x=2/75y,
  y^2-x^2=(y^2)5329/5625
• 9 years agoHelpfull: Yes(1) No(2)
• Trail and error:x=(2/75)y
  y^2 - x^2 = 5621/5625 y^2..
  replace y with 1,2,3.......................
• 9 years agoHelpfull: Yes(1) No(1)
• x=0.04/1.5*(y)
  (y-0.04/1.5*(y))(y+0.04/1.5(y))
  apply formula formula a^2-b^2 equation (1)
  do same for y=1.5/0.04*(x) and find eqn (2)
  
  then equate both eqn nd find the value by hit an trial
• 9 years agoHelpfull: Yes(1) No(0)
• 1.5/0.04=y/x,put the value of y/x in the expression a/d to formula (x+y)(x-y)=x^2-y^2,
  (y/x)^2-1
  (1.5/0.04)^2-1
  2.25/0.0016-1=2.25-0.0016
  0.1484
• 9 years agoHelpfull: Yes(1) No(1)
• y/x=1.5/0.04
  put the values and ans 1405.25
• 9 years agoHelpfull: Yes(0) No(0)
• 1.5 x=0.04 y
  x/y=0.04/1.5. (x=0.04, y=1.5)
  (y-x)(y+x)=(1.5-0.04)(1.5+0.04)
  =(1.46)(1.54)=2.2484
  so the answer is 2.2484
• 7 years agoHelpfull: Yes(0) No(0)
• 1.5 x=0.04 y
  x/y=0.04/1.5. (x=0.04, y=1.5)
  (y-x)(y+x)=(1.5-0.04)(1.5+0.04)
  =(1.46)(1.54)=2.2484
  so the answer is 2.2484
• 6 years agoHelpfull: Yes(0) No(0)
• 1.5x=0.04y
  x/y=0.04/1.5 => x/y=40/1500 => x/y=2/75 => x=2 , y=75
  acc. to ques. (75-2)(75+2) => 73*77 =5621
• 5 years agoHelpfull: Yes(0) No(0)