rosetoheart2 rosetoheart2

09-11-2018
Mathematics

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Help me with this algebra 2 work

Help me with this algebra 2 work class=

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Rinkhals Rinkhals

09-11-2018

Given : (ai + 3)(ai - 6)

⇒ (ai)(ai) - 6(ai) + 3(ai) - 18

⇒ a²i² - 3ai - 18

We know that i² = -1

⇒ -a² - 3ai - 18

Option 3 is the Answer

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