Evaluate: `[(x^(5y-5)xxx^(5-2y))/(x^(4y-6)xxx^(2y-9))]^(- 4/3)`

((x^(5y-3)xx x^(3-2y))/(x^(4y-6)xx x^(2y-9)))^(-4/3)= ______

Evaluate : 3x^(2) + 5xy - 4y^(2) + x^(2) - 8xy - 5y^(2)

Simplify (3x^5y^3z^2)/(x^2yz^4)xxx^3y^3z

x^7xxx^6xxx^-2xxx^-1xxx^5=

(x-4)(x-3)=(x-6)(x-5) (y-9)(y-3)= (y-4)(y-3)

Find each of the following products: (i) (4x + 5y) (4x - 5y) (ii) (3x^(2) + 2y^(2)) (3x^(2) - 2y^(2))

Simplify and express each the following in exponential from: ((5^7)/(5^2))xx5^3 (ii) (5^4xxx^(10)xxy^5)/(5^4xxx^7y^4)

Simplify and express each the following in exponential from: (i) ((5^7)/(5^2))xx5^3 (ii) (5^4xxx^(10)xxy^5)/(5^4xxx^7y^4)

If 7x - 15y = 4x + y , find the value of x: y . Hence, use componendo and dividendo to find the values of : (i) (9x + 5y)/(9x - 5y) (iI) (3x^(2) + 2y^(2))/(3x^(2) - 2y^(2))