7-4 (d-3)=23
7-4d+12=23 **multiply -4 with (d-3)***
7+12-4d=23
19-4d=23
-4d=23-19
-4d=4
d=4÷-4
d= -1
Answer:
(x-y) (a+x-y)
Step-by-step explanation:
(y-x)=-(x-y)
-a(y-x) = a(x-y)
(x-y)^2 = (x-y)(x-y)
(x-y)(a + x - y)
Step-by-step explanation:
Slope = (y2 - y1)/(x2 - x1)
Slope = (1 + 2)/(8 - 2)
Slope = 3/6
Slope = 1/2
The answer would be an=-2+5n
