25*x^2 - 20*x %2B 4=0 – InterviewSolution

1.

25x^2 - 20x %2B 4=0

Answer»

this is only the answe

answer is (5-2)^2 by theorem (a-b)^2

25x^2-20x+4=0; 25x^2-10x-10x+4=0; 5x(5x-2)-2(5x-2)=0; (5x-2)(5x-2)=0; x=-5/2; -5/2

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