The best option is A) d - 90.
Expressions has no equal sign nor an inequality symbol. An expression has only standard or normal numbers, with variables and some basic mathematical operations.
When the bases are diffenrent and the exponents of a and b are the same, we can multiply a and b first:
a n ⋅ b n = (a ⋅ b) n
Example:
32 ⋅ 42 = (3⋅4)2 = 122 = 12⋅12 = 144
When the bases and the exponents are different we have to calculate each exponent and then multiply:
a n ⋅ b m
Example:
32 ⋅ 43 = 9 ⋅ 64 = 576
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Answer:
A prime number is a number ( greater than 1) and it cannot be found/formed by multiplying two smaller numbers.
A composite number is a positive number/integer that can be found/formed by multiplying two smaller numbers/integers.
Hope this helps! Have a great day/night! :)
