evaluate (2i-3)^3 ?
just evaluate this form by using (a+b)^3 formula.
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This question is based on Polynomials, Grade 9.
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Question: Evaluate (2i - 3)³
Answer:
Here we use the formula: (a-b)³ = a³ - b³ - 3ab (a - b)
(2i - 3)³ = (2i)³ - 3³ - 3(2i)(3) (2i - 3)
= 8i³ - 27 - 18i (2i - 3)
= 8i³ - 27 - 36i² - 54i
Answer: 8i³ - 27 - 36i² - 54i
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