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13 January, 14:41

Whats the answer for this

4b²+20b+25

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  1. 13 January, 15:00
    0
    4b²+20b+25=0

    Divide everything by 4

    b²+5b + 6.25=0

    use the quadratic formula

    x = (-b + or - √b²-4ac) / 2a

    x = (-5 + or - √5²-4*1*6.25) / 2 (1)

    x = - 5/2 so

    in this case, b = - 5/2
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