ЁЯУв Too many exams? DonтАЩt know which one suits you best? Book Your Free Expert ЁЯСЙ call Now!

    Question

    I.70x² - 143x + 72 = 0 II. 80 y² - 142y

    + 63 = 0
    A If x < y Correct Answer Incorrect Answer
    B If x > y Correct Answer Incorrect Answer
    C If x = y or no relationship cannot be established between x and y. Correct Answer Incorrect Answer
    D If x тЙе y Correct Answer Incorrect Answer
    E If x тЙд y Correct Answer Incorrect Answer

    Solution

    I. 70x² - 143x + 72 = 0 70x² - 63x - 80 x + 72 = 0 7 x(10 x – 9) – 8(10 x – 9) = 0 (7x – 8) (10 x – 9) = 0 ∴ x = 9/10 ,8/7 II. 80 y² - 142y + 63 = 0 80 y² - 70 y - 72y + 63 = 0 10 y(8 y – 7) – 9(8 y – 7) = 0 (10 y – 9) (8 y – 7) = 0 ∴ y = 9/10 ,7/8 Hence, x ≥ y

    Practice Next
    More Quadratic equation Questions

    Relevant for Exams:

    ask-question