(iv) find the value of `(2/3)^2xx(-3/5)^3xx(7/2)^2`

Find the value of the (-2)^(3)xx5^(2)

Find the value of the 2^(3)xx (-3)^(2) .

Find the value of : (-3) xx 2xy xx 3x^(2)y^(2)

Evaluate : (-5)^(2)xx(-5)^(3)

If 5^(x +1) = 25^(x-2) , find the value of 3^(x-3) xx 2^(3-x) .

Observe the following pattern (1xx2)+(2xx3)=(2xx3xx4)/3, (1xx2)+(2xx3)+(3xx4)=(3xx4xx5)/3, (1xx2)+(2xx3)+(3xx4)+(4xx5)=(4xx5xx6)/3 and find the value of \ (1xx2)+(2xx3)+(3xx4)+(4xx5)+(5xx6)

Find the value of the (-4)^(3)xx5^(2)xx6^(0) .

Find the value of (3x^(3)) xx (-5xy^(2)) xx (2x^(2)yz^(3)) for x = 1, y = 2 and z = 3.

Find the value of n : (2^(3)xx5^(n+1)xx10^(2)xx5^(n-1))/(125xx5^(n-2)xx2^(7))=(25)/(4)

Find the value of 3-(5-6-:3) 2. 21-12-:3xx2