The equation of a circle is defined by: (x - h)² + (y - k)² = r² where
(h,k) represents the center of your circle and r = the radius
So (x - 2)² + (y + 8)² = 121 is your equation
Answer:
by using the identity a square - b square = (a+b)*(a-b)
a = x+y
b=4-x
= (x+y + 4-x)(x+y - 4-x)
y+4 * x+y -4+x
y+4*2x+y-4
2xy+y square -4y + yx + 4x + 4y - 16 +4x
3xy +y square + 8x -16
Step-by-step explanation:
Answer:
2.2
Step-by-step explanation:
a^ - b^ a squared minus b squared.
use distributive property of multiplication. FOIL (first, outside, inside, last)
a *a = a^ - b*a= ab (or ba) + b*a = ba (or ab) - b*b= b^
a squared - ab +ab - b squared
Negative ab and positive ab = 0 therefore you are left with
a^ - b^
