SOLUTION: 1+3a=10a2

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Question 704755: 1+3a=10a2
Answer by checkley79(3341) About Me  (Show Source):
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1+3a=10a^2
10A^2-3A-1=0
(5A+1)(2A-1)=0
5A+1=0
5A=-1
A=-1/5 ANS.
2A-1=0
2A=1
A=1/2 ANS.
PROOF:
1+3(-1/5)=10(-1/5)^2
1-3/5=10*1/25
2/5=10/25
2/5=2/5
1+3(1/2)=10(1/2)^2
1+3/2=10*1/4
2 1/2=10/4
2.5=2.5