Following PEMDAS is crucial to solving these. Please Excuse My Dear Aunt Sally
P - Parenthesis
E - Exponents
M - Multiplication
D - Division
A - Addition
S - Subtraction
Multiplication/Division and Addition/Subtraction are interchangeable.
Now then, number 1 has the following:

There are no parenthesis or exponents, but there is multiplication, so we will start with multiplying. There are two multiplication expressions in the problem.


Since you did that, your answer has been simplified to:

Now, all you have to do is combine your like terms. Since every term is alike, you can combine the whole expression.

So, your final answer would be:

Hopefully with this information, you can solve the rest. If you have any questions, let me know.
its B y=4x
because all the number equals four like
2*4=8
3*4=12
4*4=16
5*4=20
Answer:
Step-by-step explanation:
9x - 6y = 42
5x + 6y = 42
14x = 84
x = 6
30 + 6y = 42
6y = 12
y = 2
(6, 2)
Answer:
26.55
Step-by-step explanation:
When rounding to the nearest whatever, you always look at the digit to the right of it. In this case, you look at the thousandth digit. 3 is not equal to or less than five, so you round 3 to 0 and you get 26.55
Given:
The expression is

To find:
The factors by grouping method.
Solution:
We have,

Taking out common factors, we get

Splitting the middle term, we get

By grouping method, we get


Therefore, the factor form of given expression is x(x-5)(9x+6).