Question
If 10x² – 6xy + y² – 4x+4= 0, then find the value
of (x+2y).Solution
10x² – 6xy+y² – 4x+4= 0 x² - 4x+4+9x²+y²-6xy=0 (x-2)²+(3x-y)²=0 When- x-2=0 x=2 3x-y =0 y=6 Now – x+2y =2+2x6=14.
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