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04.if α and β are the roots of the quadratic polynomial p(x)-2x2-4x + 1, then the value of+ 2e i 2α +ß is equal to71 |
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Answer» a+b=4/2=2ab=1/2(a+b)^2=4a^2+2ab+b^2=4so a^2+b^2=31/(a+2b)+1/(2a+b)=(2a+b+a+2b)/((a+2b)(2a+b))=(3a+3b)/((2a^2+5ab+2b^2)=3(2)/((2(3)+5(1/2))=6/(6+2.5)=6/8.5=12/17 |
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