5. Simplify the expressions below by combining like terms a) 4 + x + 3x + 2x - 2
1 answer:
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Answer:
5859375
Step-by-step explanation:
These are the terms of a geometric sequence with n th term
=
where r is the common ratio and the first term
here r = =
=
= 5 and
= 3, hence
= 3 ×
= 5859375