(a) Solve the equation x3 + 64x = 0

Intermediate Algebra
19th Edition
ISBN:9780998625720
Author:Lynn Marecek
Publisher:Lynn Marecek
Chapter12: Sequences, Series And Binomial Theorem
Section12.2: Arithmetic Sequences
Problem 12.32TI: Find the nineteenth term of a sequence where the fifth term is 1 and the common difference is -4....
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(a)
Solve the equation x3 + 64x = 0
3-2j
(b)
Simplify
into the form a + bj. [Appropriate workings must be shown].
2+j
(c)
i) Find the sum of first 40 terms in an arithmetic sequence with first term 10 and
common difference (-4).
ii) The 3rd term of an arithmetic series is 34 and the 17th term is -8. Find the
sum of first 20 terms.
Transcribed Image Text:(a) Solve the equation x3 + 64x = 0 3-2j (b) Simplify into the form a + bj. [Appropriate workings must be shown]. 2+j (c) i) Find the sum of first 40 terms in an arithmetic sequence with first term 10 and common difference (-4). ii) The 3rd term of an arithmetic series is 34 and the 17th term is -8. Find the sum of first 20 terms.
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