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If f(x) = x3 – 2×2, which expression is equivalent to f(i)?
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2 – i

f(i) = i³ – 2(i)²
Use the facts, i³ = i and i² = 1
f(i) = 2 – i

i^3 = i and 2i^2 = 2, so the answer is
+2i
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posted on
If f(x) = x3 – 2×2, which expression is equivalent to f(i)?
2 – i
f(i) = i³ – 2(i)²
Use the facts, i³ = i and i² = 1
f(i) = 2 – i
i^3 = i and 2i^2 = 2, so the answer is
+2i
posted on
If f(x) = x3 – 2×2, which expression is equivalent to f(i)?
2 – i
f(i) = i³ – 2(i)²
Use the facts, i³ = i and i² = 1
f(i) = 2 – i
i^3 = i and 2i^2 = 2, so the answer is
+2i
posted on
If f(x) = x3 – 2×2, which expression is equivalent to f(i)?
2 – i
f(i) = i³ – 2(i)²
Use the facts, i³ = i and i² = 1
f(i) = 2 – i
i^3 = i and 2i^2 = 2, so the answer is
+2i
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