(a-b)^2 = a^2-2ab+b^2
(8-5i)^2 = 8^2-2(8)(5i)+(5i)^2
= 64-80i+25i^2
i^2=-1
So
= 64-80i+25(-1)
=64-25-80i
= <em><u>39 - 80i</u></em>
which is your answer :)
WAR is given as 57 degrees.
If you draw a line from W to R, the angle WRA would also be 57 degrees.
57 + 57 = 114
The measure of AR = 180 -114 = 66 degrees.
Answer:
3 * (x + 7)
Step-by-step explanation:
Mark number as x
Then the sum of a number and seven is x + 7
Three times x + 7 can be written as
3 * (x + 7)
Parentheses mean that we first add x and 7 and then multiply their sum by 3
Alternatively you can write it as 3x + 21, since
3 * (x + 7) = 3 * x + 3 * 7 = 3x + 21
Answer:
You too hon <3
Step-by-step explanation:
Let's do it step by step. In the first step eliminate the two parenthesis, for which you need to use the rule of multiplication of signs: the multiplication of two equal signs leads to positive sign, the multiplication of two different signs leads to negative sign. So -(-8) = +8 and -(-14) = +14. and 19 -(-8) - (-14) - 19 + 8 + 14 = 41. The answer is the option C. 41<span>.</span>
