First simplify inside parenthasees
8-6x+12
-6x+8+12
-6x+20
distributive poproty
a(b+c)=ab+ac
1/4(-6x+20)=-6x/4+20/4=
-3/2x+5
Answer: 9√17
using pythagoras theorem, we have:
the base of the triangle is 
Step-by-step explanation:
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