As a fraction it would be 8/5
8-2(3x+5)=0
8(-6x-10)=0
-48x-80=0
-48x=80
x= -8/5 or -1.6
It is wrong c is the correct answer I think
Since the three angles of a triangle add to give 180°
The the size of the largest angle 4 = 180° ×

= 180° ×
∴ the size of the largest angle = 80°
Answer:
The answer to your question is:
Step-by-step explanation:

Factorize 
Factorize 
Simplify 