If x=2,y=15 and z=20 The value of yx is 225
The value of expression 20xy + 4y + 3x, when x = 2 and y = 1 is 50.
If x, y and z are in continued proportion then z:x::z2:y2.
Continued proportion means a:b : : b:c
The value of (3x2+5y2)(4xy−5y), if the value of x=2 and y=3, is 513.
If ax = by = cz and b2 = ac then 1x + 1z = 1y