How many 2-digit numbers can you make without repeating the digits? Numbers like 34 not like 55. 80

81

83

84

81.

Step-by-step explanation:

The 2 digit numbers without repeated digits is 81. There are 90 two-digit numbers in the decimal system. In 9 of them, both digits are the same number. So, there remain 81 without repetitions.

no not all of them.

step-by-step explanation:

some of them have a square base.

(f - g)(x) = 5x^3 - 3

step-by-step explanation:

rearrange these functions vertically, with like terms in separate columns:

f(x) = 5x^3 - 2

g(x) =         +1

now subtract, column by column:

(f - g)(x) = 5x^3 - 3