Answer:
x² + y² - 14x + 6y + 9 = 0
Step-by-step explanation:
the equation of a circle in general form is
x² + y² + 2gx + 2fy + c = 0
given
(x - 7)² + (y + 3)² = 49 ← expand factors using FOIL
x² - 14x + 49 + y² + 6y + 9 = 49 , that is
x² + y² - 14x + 6y + 58 = 49 ( subtract 49 from both sides )
x² + y²- 14x + 6y + 9 = 0 ← in general form
x+y=11
take the square root of both sides.
(x-7) + (y+3) = 7
collect like terms
x+y = 7+7-3
Hope this helps!
B
58×20=1160
0+160+1000=1160
f(g(-7))
