Multiply it out
x^2 + 4x -8x -32
Combine like terms
x^2 -4x - 32
If triangles AMN and ABC are similar, then
AM/AB = AN/AC
or
AM/(AM + MB) = AN/(AN + NC)
Check if this is true:
AM/AB = 21/(21 + 9) = 21/30 = 7/10
AN/AC = 14/(14 + 6) = 14/20 = 7/10
The angle at vertex A is common to both of the triangles.
Then by the side-angle-side (SAS) similarity theorem, the triangles are indeed similar.
X + 12 = 20
x + 12 -12 = 20 -12
x = 8
Answer:
-1.5
Step-by-step explanation:
5. 60/12 is 5 :) hope this helps
