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March 25, 2017

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what is the solution sets of the following
a) 2x^-7x-5
b)5y^-16y+3
c)10x^+5y-6
d)10x^-13x+4
e)12y^-11y-5
f)10c^-21c+9
g)3m^+5m-2

  • math - ,

    Are these equations equal to zero?

    If so, then I noticed that each one factors quite easily.
    I will do the last one

    g)
    3m^2 + 5m - 2 =0
    (3m - 1)(m + 2) = 0
    3m-1 = 0 or m+2 = 0
    m = 1/3 or m = -2

    do the others the same way.

    You can check your answers by subbing them back in.
    e.g. if m = -2
    LS = 3(4) + 5(-2) - 2
    = 12 - 10 - 2
    = 0
    = RS
    so my answer of m=-2 is correct

  • math - ,

    you are missing the exponents
    if (a) should be 2x^2 - 7x - 5
    a) 2x^2 - 7x - 5
    does not factor, solve by using the quadratic formula or completing the square

    if you are stuck, post your work and someone will help

    tutors do not do your homework

  • Algebra 2 - ,

    Complete the square to solve -x^2-7x+6=-2x^2

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