|
to problems 30..39
to problems 50..59
40.
Solve x in:
(base of logarithm is 10)
41.
If:
calculate x-y
42.
Below squares are pictured.
The red area is 20.
How big is the blue area?.
43.
find values of x satisfying:
44.
Calculate the value of
45.
Calculate:
46.
Find x if :
47.
If
calculate
48.
x + y = 2
x5 + y5 = 82
Calculate x and y
49.
For which values of x is true:
|
|