Answer:
87
Step-by-step explanation:
We are looking at the numbers up side down
the number on the right is 86 and going to the left is 87, 88 ,89 ,90 ,91
Answer:
1.5
Step-by-step explanation:
4x + 17 = 23
- 17 -17
4x=6
then divide 4 from both sides and you get
x=1.5
Answer:

Option (C) is correct .
Step-by-step explanation:
As the expression given in the question as follows.

Now rationalize the expression.

Using the formula
a² - b² = (a - b) (a + b)
Using in the above


As i² = -1



Option (C) is correct .