Sum of opp. interior angles = ext. angle
sum of all interior angle in a trangle = 180 deg
3i (- 1 + 2i) Remove the brackets.
3i (-1) + (2i)(3i) Look at the first set of brackets around the -1
-3i + 6i^2 But i^2 = - 1[ I hope that's the way you are using it]
-3i - 6 or -6 - 3i or -3(2 - i) <<<<< answer
It's just telling you to multiple like 9×1=9 9×2=18 and so on.
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Step-by-step explanation:
Whenever you have exponents raised to another exponent, you multiply the exponents!
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use photomath and your welcome :)))
