2x²-2√2x+1=0 find the root by using quadratic formula.
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Step-by-step explanation:
The quadratic equation is 2x2−22x+1=0.
Comparing it with standard form of quadratic equation ax2+bx+c=0,we get a=2,b=−22,c=1 Therefore the roots of the quadratic equation are,
x=2a−b±b2−4ac
=2×2−(−22)±(−22)2−4×2×1
=4(22)±8−8
=422±0
=422
=22
=21
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