Answer:
B
Step-by-step explanation:
D
x/(x²+3x+2) - 1/[(x+2)(x+1)]
x² + 3x + 2 = x² + 2x + x + 2
= x(x + 2) + (x + 2)
= (x + 2)(x + 1)
= x/[(x+2)(x+1)] - 1/[(x+2)(x+1)]
= (x-1)/[(x+2)(x+1)]
= (x-1)/(x²+3x+2)
the slope of the line x+y = 6 is -1.
slope = - coefficient of x
----------------------
coefficient of y
slope = -1 /1
slope = -1
