# Math

posted by .

If xy=7 and x-y=5 then x2 y-xy2=

• Math -

x^2y - xy^2
=xy(x-y)
= 7(5) = 35

## Similar Questions

1. ### calculus

calculate Äƒ/Äx and Äƒ/Äy. ƒ(x,y) = xy² + x²y

Suppose x and y are real numbers such that xy = 9 and x2y + xy2 + x + y = 100. What is the integer value of x2 + y2?
3. ### Math- calculus

Suppose f is a function which satisfies the properties: f(x+y)=f(x)+f(y)+x2y+xy2 for all real numbers x and y, and limx→0f(x)x=1. f′(x) thanks in advance!
4. ### math

Use Green's Theorem to evaluate the line integral along the given positively oriented curve. integral of xy2 dx + 4x2y dy C is the triangle with vertices (0, 0), (2, 2), and (2, 4)
5. ### Chemistry

Determine the molar solubility of Y for XY2 if Ksp is 2.2x10^-4. The 2 in Xy2 is a subscript. I found the Ksp equation which is ksp=[x^2+][Y^-]^2 Then I did the ICE table and got x and 2x for the equilibrium concentrations. Then I …
6. ### Chemistry

Determine the molar solubility of Y for XY2 if Ksp is 2.2x10^-4 The answer is 0.038, but I'm not sure how
7. ### Linear or Nonlinear, Order.

(a) y''' + y' - xy = x (b) y'' - y' = xy2 (c)x/y = y' (d)(xy')' = cos x
8. ### MATH

Consider F and C below. F(x, y, z) = 2xz + y2 i + 2xy j + x2 + 15z2 k C: x = t2, y = t + 2, z = 3t − 1, 0 ≤ t ≤ 1 (a) Find a function f such that F = ∇f. f(x, y, z) = x2z+xy2+5z3+C Correct: Your answer is correct. (b) Use part …
9. ### Math

Consider F and C below. F(x, y, z) = (2xz + y2) i + 2xy j + (x2 + 15z2) k C: x = t2, y = t + 2, z = 3t − 1, 0 ≤ t ≤ 1 (a) Find a function f such that F = ∇f. f(x, y, z) = x2z+xy2+5z3+C Correct: Your answer is correct. (b) Use …
10. ### maths/calculus damon,steve,reiny help steve

x³dy/dx + 3y² = xy² Given x=1 when y=1 plz help me show step help!!

More Similar Questions