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How do I solve 2xsquared - 20x = 8

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1 Answer

First, divide both sides by 2 to get:
 
x2-10x=4; Or it can be written as x2-10x-4=0;
 
Use quadratic formula for even coefficient at the x term. You will get:
 
x1,2=5±√(25+4)=5±√29
 
Answer:
 
x1=5-√29
x2=5+√29