SOLUTION: solve 2x+4x to the power of 2=42

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Question 828925: solve 2x+4x to the power of 2=42
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
2x%2B4x%5E2=42
4x%5E2%2B2x=42
4%28x%5E2%2B%281%2F2%29x%2B1%2F16%29=42%2B4%281%2F16%29
4%28x%2B%281%2F4%29%29%5E2=168%2F4%2B1%2F4
4%28x%2B1%2F4%29%5E2=169%2F4
%28x%2B1%2F4%29%5E2=169%2F16
Two solutions:
x%2B1%2F4=13%2F4 and x%2B1%2F4=-13%2F4
highlight%28x=12%2F4=3%29 and highlight%28x=14%2F4=-7%2F2%29