Answer:
cool I'm down
Step-by-step explanation:
what does this need to be twenty letters long for though
Answer:

Step-by-step explanation:
Two ways.
1. Convert to the decimal:

therefore


2. Convert to the fractions with common denominator.


therefore

(5c-3)(-5c+7)
Answer = -25c2+50c-21
Answer:
x² + y² +10x -6y - 69 = 0
Step-by-step explanation:
We need to write the standard equation of circle with , centre (-5,3) and radius 10 unit . The Standard equation of the circle ⭕ is ,
=> ( x - (-5))² + (y -3)² = r²
=> ( x +5)² + (y-3)² = 10²
=> x² + 25 + 10x + y² +9-6y = 100
=> x² + y² +10x -6y + 31 = 100
=> x² + y² +10x -6y - 69 = 0
<h3>• Hence the equation of the circle is x² + y² +10x -6y - 69 = 0.</h3>