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3 years ago

If f(x) = x^3 - 2x^2 , which expression is equivalent to ff(i)?

Mathematics

1 answer:

kkurt [141]3 years ago

6 0

$i=\sqrt{-1}\to i^2=-1\\\\f(x)=x^3-2x^2\\\\f(i)=i^3-2(i^2)=i\cdot i^2-2(-1)=i(-1)+2=2-i$

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Answer:

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3 years ago

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Given:

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$\begin{gathered} D=\sqrt[]{(3-3)^2+(-5-4)^2} \\ =\sqrt[]{0^2+(-9)^2} \\ =9 \end{gathered}$

So BC is 9 unit apart.

For fourth bush point is (-5,-5) it left of point C(3,-5) is:

$\begin{gathered} D=\sqrt[]{(3-(-5))^2+(-5-(-5))^2} \\ =\sqrt[]{(8)^2+0^2} \\ =8 \end{gathered}$

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For fourth bush(-5,-5) below to point A(-5,4)

$\begin{gathered} D=\sqrt[]{(-5-(-5))^2+(4-(-5))^2} \\ =\sqrt[]{0^2+9^2} \\ =9 \end{gathered}$

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1 year ago

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3 years ago

Read 2 more answers

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