Question:

How do you expand (3x-5)^2?

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How do you expand (3x-5)^2?

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  1. Since u are squaring a binomial, u have to do it like so:

    (3x-5)(3x-5)

    After that, u just FOIL them together

    FOIL is multiplying first terms, outer terms, inner terms, and then last terms.  I hope that helps you.  


  2. I don't know what the sign before the two is

  3. 9x^2-30x+25

  4. its 3x times 3x + (3xtimes -5) +(3x times -5) + (-5 times -5)

    so itll be 9x^2 + -15x+ -15x + 25

    so after all that itll be (9x^2-30x+25)


  5. (3x-5)^2

    =(3x-5)(3x-5)

    =(3x)(3x) + (3x)(-5) + (-5)(3x) + (-5)(-5)

    =9x^2-15x-15x + 25

    =9x^2 - 30x + 25

  6. this website saved me during my college algebra class and i'm sure it will help you.

    www.myalgebra.com

    just type in the algebra problem push submit and boom! you have your answer

    oh and the answer is

    9x^2-30x+25

    just foil it.

    multiply

    First numbers

    Outer numbers

    Inner numbers

    Last numbers

    pairs get positive signs

  7. (3x-5)(3x-5)

  8. (a + b) ^ 2 = a^2 + 2ab + b^2

  9. (3x-5)(3x-5) =

    9x^2 - 15x - 15x + 25 =

    9x^2-30x+25

  10. 9x^2 - 30x + 25

  11. Expand it below:

    Let  (3.x-5)^2 is (x+x+x-5)(x+x+x-5)

  12. 9x^2 + 25 - 30x

  13. (3x-5)(3x-5)= (3x-5)^2

  14. (3x-5)^2

    = (3x-5)(3x-5)

    = 9(x^2) - 15x - 15x + 25

    = 9(x^2) - 30x + 25

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