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Quadratic & Other Test 3
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  • Question 1/10
    1 / -0

    The least value of 7x + 7-x is _____.

  • Question 2/10
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    If the equation 9x2 + 6kx + 4 = 0 has equal roots, then the value of k must be?

  • Question 3/10
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    Construct a quadratic equation, whose roots are half of the roots of the equation x2 + 5x + 9 = 0.

  • Question 4/10
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    A and B are the roots of the equation x2 + bx + c = 0. A2 + B2 = 5 and (A + B)2 = 1.

    What is the value of c?

  • Question 5/10
    1 / -0

    The equation x2 + 4x + k = 0 has real roots. Then.

  • Question 6/10
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    Twice of the square of the number is 17 more than the square of two more then the number. Find the sum of the digits of the original number.

  • Question 7/10
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    If x be real. Find the maximum value of 14+ 20x - 10x2.

  • Question 8/10
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    Mr. David is on tour and he has Rs. 360 for his expenses if he exceeds his tour by 4 days, he must cut down his daily expenses by Rs.3 for how many days is Mr. David out on tour?

  • Question 9/10
    1 / -0

    A and B attempt to solve a quadratic equation of the form ax2 + bx + c = 0. A starts with a wrong value of b and gets roots as -3 and -5. B starts with a wrong value of c and gets the roots as 6 and 2. Find the correct roots.

  • Question 10/10
    1 / -0

    If 3x2 + 10x + 8x = 0 has it roots α and β. Find the quadratic equation with roots 1/α and 1/β.

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