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
Answer:
Step-by-step explanation:
2x^2-2x-12
This has solutions of x=3 and x= -2
Answer:
115
Step-by-step explanation:
A supplementary line equals 180
You have to subtract 65 by 180
which gives you 115
Answer:
3 1/8
Step-by-step explanation:
Answer:
9
Step-by-step explanation:
Let us say, Olivia's age is x.
Now as the question says, we will get this equation.

Multiply both sides by 3.

Collect like terms.

Calculate.

Divide both sides of the equation by -5.

Then, we will get the answer.
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