Answer:
Step-by-step explanation:
Since it's a perfect square, we can simply use the formula:
Given the perfect square expression 
. Apply perfect square formula:
Knowing laws of exponent is mandatory when it comes to algebra. Recall that:
Apply laws of exponent to simplify the terms or expression:
Since there are no like-terms to do operation with (these terms have different degrees so they are not considered to be like-terms.) Therefore, the final answer is:
Answer:
48
Step-by-step explanation:
not sure
Answer:
x = 5
Step-by-step explanation:
Step 1: Write equation
5x - 7 = 18
Step 2: Solve for <em>x</em>
- Add 7 to both sides: 5x = 25
- Divide both sides by 5: x = 5
Step 3: Check
<em>Plug in x to verify it's a solution.</em>
5(5) - 7 = 18
25 - 7 = 18
18 = 18
98.86-85.15= 13.71 This is the answer to the problem. It's really easy. U just subtract and that's it.
Answer:
25
Step-by-step explanation:
So first we'll input the numbers then since we have them.
5(1) + 3(7) - 1^3
So we're going to use the order of operations here first (PEMDAS) and start with the exponent because the parenthesis I used just represent multiplication. And 1 to the power of anything is still 1. Even 1^1000000000000000000000000000.....
It's still 1.
So now we have this:
5(1) + 3(7) - 1
Now we can multiply:
5 + 21 - 1
Then, add and subtract:
26 - 1
To get:
25
