The expression 36x² - 121 is in the 'difference of two squares form' which is (a² - b²)
Factorising (a² - b²) gives (a+b)(a-b)
Factorising 36x² - 121 gives (6x+11)(6x-11)
Answer: D:
To get system B, the second equation in system A was replaced by the sum of that equation and the first equation multiplied by 5. The solution to system B will be the same as the solution to system A.
Step-by-step explanation:
Answer:
80
Step-by-step explanation:
80 can be divided by 2, 4, 5, 8, 10, 16, 20, 40
Answer:radius =10 units
Step-by-step explanation:
Given
Equation of circle is given by
Now general equation of circle with center 
with radius 
is given by
Comparing 
and 
we get
Thus center is 
and radius 
