If x - y = 3, xy = 28 then let's find out the value of `(x^2 + y^2)`

If (x-y)^2 = 4 - 4y + y^2 , then let's find the value of x.

(a) If x : y = 3 : 4 , then find the value of the ratio (2x + y) : ( 9x - 2y) . (b) If x : y = 5 : 4 , then find the value of the ratio (x^(2) + xy) : (x^(2) - xy) .

If (3x-5y)/(3x+5y) = 1/2 . Then find the value of (3x^(2)-5y^(2))/(3x^(2) + 5y^(2)) .

If x= (sqrt5+1)/(sqrt5-1) and x = 1/y then find the value of (3x^(2) -7xy + 3y^(2))

If x=2+3i and y=2-3i then find the values of : (x^(2)+xy+y^(2))/(x^(2)-xy+y^(2))

If x =1 + sqrt2 + sqrt3 and y =1 + sqrt2 -sqrt3 then find the value of (x^(2) +4xy +y^(2))/(x+y)

Find the value of (2x+3y)+(3x+y).

Using formula, let's solve each of the following problems- If frac(x)(y) + frac(y)(x) = 3 , Let's find the value of frac(x^2)(y^2) + frac(y^2)(x^2)

If x = 2 + sqrt3, y = 2 - sqrt3 , then find the simpliest value of (a) x - (1)/(x) , (b) y^(2) + (1)/(y^(2)) , (c) x^(3) - (1)/(x^(3)) , (d) xy + (1)/(xy)

Using formula, let's solve each of the following problems- Let's find the value of x^2 + y^2 when xy=16.and x-y=4