if `xy` multiplying to `ab`, the result gets `pqr` while `r=2y , q=2(x+y)` and `p=2x` and `x,y < 5 ` then `ab`

Multiply -4xy^(3) and 6x^(2)y and verify your result for x = 2 and y = 1.

Multiply the - 3x ^(2) y , ( 5y - xy)

Multiply 3x^(2)y and -2xy^(2) . Verify the product for x = 1 and y = 2.

x,y in R with (x>y) such that x^2 y^2 + x^2 +y^2 + 2xy = 40 and xy + x+y=8 Find x.

Multiply by using the correct identity (x+y-z)(x^(2)+y^(2)+z^(2)-xy+xz+yz)

If P(x_1,y_1),Q(x_2,y_2),R(x_3,y_3) and S(x_4,y_4) are four concyclic points on the rectangular hyperbola ) and xy = c^2 , then coordinates of the orthocentre ofthe triangle PQR is

If P(x_1,y_1),Q(x_2,y_2),R(x_3,y_3) and S(x_4,y_4) are four concyclic points on the rectangular hyperbola ) and xy = c^2 , then coordinates of the orthocentre ofthe triangle PQR is

Multiply (-4)/(3)xy^(3) by (6)/(7)x^(2)y and verify your result for x = 2 and y = 1

Let Q be the set of rational number and R be the relation on Q defined by R={(x,y):x,y in Q , x^(2)+3y^(2)=4xy} check whether R is reflexive, symmetric and transitive.

Add:p(p-q),q(q-r) and r(r-p)2x(z-x-y) and 2y(z-y-x)