if 1/2x^2 – 1/4 x + 3 what is the value of x = 8 ?

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if 1/2x^2 – 1/4 x + 3 what is the value of x = 8 ?

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Dulcie 4 years 2021-07-22T15:13:47+00:00 1 Answers 3 views 0

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  1. thienthi
    0
    2021-07-22T15:15:45+00:00
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    Answer:

    If x=8 then the equation is equal to 33

    If 1/2(x)^2-1/4x=3=8 then x=-2.98 and x=3.35

    Step-by-step explanation:

    Given:

    1/2x^2-1/4x+3

    Two solutions possible:

    If x=8 then 1/2(8)^2-1/4(8)+3=32-2=3=33

    If 1/2(x)^2-1/4x+3=8 then .5x^2-.25x-5=0

    factoring:

    (.707x+2.11)(.707x-2.37)=0

    .707x=-2.11 and .707x=2.37

    x=-2.98 and x=3.35 rounded to 2 places

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