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algebra

posted by on .

Please help
f(x) = 3x² + 2
x= 3
my question, do I start by solving x² first then multiply by 3 and adding 2

f(3= 3 * 9 + 2 = 29
or do I multiply first
3*3 =9² +2 = 83
I'm pretty sure we resolve the exponents first but need some help

  • algebra - ,

    sub in 3 for x

  • algebra - ,

    Use BEDMAS

    B - brackets, (if any)
    E - exponents
    D - divisions in the order they occur
    M - Multiplications in the order they occur
    A - Additions in the order they occur
    S - Subtraction in the order they occur

    Yes, you are correct in the order you did the calculation the first time
    f(3) = 3(3^2) + 2
    = 3(9) + 2
    = 27+2
    = 29

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