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Find the roots of the following …

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Find the roots of the following quadratic equations,by the formula method. 1)5xsquare - 6x - 2 = 0 2)4xsquare + 3x + 5 = 0

    • Posted by Boregowda Boregowda 5 years, 4 months ago

    CBSE > Class 10 > Mathematics
    • 2 answers

    ? Pranali.A.P ? 5 years, 4 months ago

    Roots are x = (3±√14)/5..... Explanation:.... Compare 5x²-6x-2=0 with ....... =x²+bx+c=0 we get...... a = 5, b = -6 , c = -2 ....... Discreminant (D) = b²-4ac........ = (-6)²-4×5×(-2)........................................... = 36 + 40...................... = 76............... By Quadratic Formula:...................... x = [(-b±√D)/2a]..................... = [-(-6)±√76]/(2×5)............ = ( 6±2√14)/10............. = (3±√14)/5.............. Therefore,........... Roots are x = (3±√14)/5..,.............. •••.............

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    Aditya Pandey 5 years, 4 months ago

    https://youtu.be/1xKSSckSA0Q

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