Example

3(r+2s)=2t-4
a⋅(b-2)=3b
3(r+2s)=2t-4
a⋅(b-2)=3b

Question

$$\sum _ { i = 3 } ^ { 5 } ( 5 x _ { i } - 10 )$$

Answer

3*(-10+5*IM*x)

Solution


Regroup terms.
\[(5\imath x-10)\times 3\]
Regroup terms.
\[(-10+5\imath x)\times 3\]
Regroup terms.
\[3(-10+5\imath x)\]
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