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OpenStudy (anonymous):
help! medal!
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OpenStudy (anonymous):
@Hero
OpenStudy (anonymous):
Find a • b. a = 4i + 8j, b = -2i + 3j
OpenStudy (anonymous):
@SolomonZelman
OpenStudy (anonymous):
You multiply both expressions like this... (4i +8j) (-2i + 3j) Do you know how to solve this?
OpenStudy (anonymous):
i got 32
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OpenStudy (anonymous):
anybody there?...
OpenStudy (anonymous):
@SolomonZelman
OpenStudy (anonymous):
@SithsAndGiggles
OpenStudy (anonymous):
\[(4)(-2)+(8)(3)=-8+24=16\]
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