In order to solve this we will have to apply PEMDAS rule which is as follows:
P
Parentheses first
E
Exponents (ie Powers and Square Roots, etc.)
MD
Multiplication and Division (left-to-right)
AS
Addition and Subtraction (left-to-right)
7+8(3.2.2)
Step 1:
Here we will solve the parenthesis first :
multiplying 3.2.2 =12
so we have 7+8(12)
Step 2:
now we multiply 12*8 here
12*8=96
7+96
Step 3:
addition of 7 and 96 gives us 103
Answer : 7+8(3.2.2) = 103
D, negatives of A and B cancel each other out.
There is a way to work it out with a pencil and paper, but that's too complicated
to try and explain with only text, like we have here.
I don't usually recommend this for things that can be done easily on paper ...
but for square roots, your best bet is to use a calculator.
The square root of 30 does not come out even. It starts out 5.477225...
and it keeps going and never ends.
The negative of 5.477225... is also a square root of 30. Every number has
two square roots ... the positive and negative of the same number.
Answer:
3 and 1
Step-by-step explanation:
They are the only numbers that could give the right answer.
