the zeroes of the quadratic polynomials x^2- 25x+ 156 is positive or negative ​

Question

the zeroes of the quadratic polynomials x^2- 25x+ 156 is positive or negative ​

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Hadley 1 week 2021-09-13T14:36:22+00:00 2 Answers 0 views 0

Answers ( )

    0
    2021-09-13T14:37:31+00:00

    X^2-25x+156
    a=2 b=- 25 c= 156
    D = 625- 4*1*156
    625-624 = 1
    X= (25 +- 1)/2
    26/2 or 24/2
    13 or 12

    0
    2021-09-13T14:37:39+00:00

    Answer:

    We have equation  : x 2 – 88 x +  125

    And we know quadratic formula :

    x  = −b±b2 − 4ac√2a

    Here a  =  1  ,  b  =   – 88  and c =  125

    So,

    x  = −( −88 )±( −88 )2 − 4× 1 × 125√2 × 1 = 88 ±7744 −500√2  = 88 ±21811√2= 44 ±1811−−−−√ =  44 ± 42.55

    So,

    Zeros of our polynomial  x  =  44  + 42.55 = 86.55

    And

    x  =  44  – 42.55 = 1.45

    So,

    Both zeros are positive , So ans is option 1

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