Answer:
The third option
Explanation:
The given expression is:
(x+2)² + 5(x+2) - 6 = 0
Let's check each of the given options:
1- Option A:
(u+2)² + 5(u+2) - 6 = 0
At u = x - 2, the expression would become:
(x-2+2)² + 5(x-2+2) - 6 = 0
x² + 5(x) - 6 = 0 ..........> This option is incorrect
2- Option B:
u² + 4 + 5u - 6 = 0
At u = x-2, the expression would become:
(x-2)² + 5(x-2) - 2 = 0 ..........> This option is incorrect
3- Option C:
u² + 5u - 6 = 0
At u = x+2, the expression would become:
(x+2)² + 5(x+2) - 6 = 0 .........> This option is correct
4- Option D:
u² + u - 6 = 0
At u = x+2, the expression would become:
(x+2)² + (x+2) - 6 = 0 ..........> This option is incorrect
Hope this helps :)
Answer:
x=8.4
Step-by-step explanation:
4x + 8 (0.8) = 40
4x = 40 - 6.4
4x = 33.6
x = 33.6/ 4
x= 8.4
Answer:a = 6YZ = 38Step-by-step explanation:The segment addition theorem tells you ... XY +YZ = XZ (3a -4) +(6a +2) = (5a +22) 4a = 24 . . . . . . . . add 2-5a and simplify a = 6 . . . . . . . . . . divide by 4Then the length of YZ is ... YZ = 6a+2 = 6(6) +2 YZ = 38
