find the quadratic equation whoss root are twice the roots of 2x²-5x+2=0
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Roots of 2x²-5x+2 are 2 & 1/2.
Roots of unknown quadratic equation are 4 & 1.
x² - (sum of roots)x + product of roots. [put the known roots here and you will get eqn.]
x² - 5x + 4 = 0
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