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if the roots of the equationbx^2+cx+a=0 be imaginary,then for all real values of x, the expression 3b^2x^2+6bcx+2c^2 is

Answer» if the roots of the equationbx^2+cx+a=0 be imaginary,then for all real values of x, the expression 3b^2x^2+6bcx+2c^2 is


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