For me personally, the easiest way to do this is by isolating the x² term, and finding the square root of both sides. The hardest way (well actually, the longest way) would be to use the quadratic formula. It just complicates things unnecessarily.
Answer:
Hi,
a=b+3
Step-by-step explanation:


Thus:
c+2b+8-4a=c-a-b-1
3b-3a=-9
<u>a=b+3</u>
Answer:
c and d
Step-by-step explanation: