Answer:
The system of equations is:
x + y = 15
xy = 15
Step-by-step explanation:
solve the first for y and substitute in the second:
y = 15-x
x(15-x) = 15
15x - x� = 15
15x - x� - 15 = 0
-x� + 15x - 15 = 0
x� - 15x + 15 = 0
For # 1, the answer will be 1 because of the exponential rule

.
#2, the answer is going to be

because of the exponential rule

.
#3. I'm not sure that this could be simplified any further.
#4 To get the answer to this question, we must apply the distributive property, along with the exponential rule
. When we apply these properties, we'll get

For the other questions, they all apply the Laws of Exponents.
<h3><u>Answer:- </u></h3>
<h3><u>Solution:-</u></h3>
Let us first write all the provided number in decimal





<u>Comparing all the numbers </u><u>now </u><u>-</u>


Answer:
-9/4
Step-by-step explanation:
18x+36-2x=0
16x+36=0
4(4x+9)=0
x=-9/4