10th Class Mathematics Quadratic Equations Question Bank Quadratic Equation

  • question_answer
    Following graphs can be drawn to solve the quadratic equation\[4{{x}^{2}}+6x-3=0\]. Choose, the correct method?

    A)  \[y={{x}^{2}},3x-2y-3=0\]

    B)  \[y=4{{x}^{2}},6x-2y-3=0\]

    C)  \[y=3{{x}^{2}},6x-y-3=0\]

    D)  \[y=2{{x}^{2}},6x+2y-3=0\]

    Correct Answer: D

    Solution :

    (d): Take 6x ? 3 on other side: \[4{{x}^{2}}+6x-3=0\]which can be written as \[2{{x}^{2}}=-\left( 3x-\frac{3}{2} \right)\] \[~\therefore y=2{{x}^{2}}\]and\[y=-\left( 3x-\frac{3}{2} \right)\]will intersect to give roots.


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