Math Help Pleae

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1) (6z-u)(6z+7u)

how do I Find the product for this?

I have 36z^2+36zu-7u^2 is that correct?

2) Also how do i complete the ordered given pairs for the equation x-3=0

Y is 4, 1, -3 what is x?

  • Math Help Pleae -

    The first 1 is correct

    For the second problem, You should make an x and y chart I THINK.

  • Math Help Pleae (Chopsticks) -

    Thanks. What about find the slope, if it exists, of the line containing the given pair points

    (-17,-3) and (-20,-9)

    The slope M=

    is this 2x+31 or 2x or just 2?

  • Math Help Pleae -

    The formula to find that is
    y2-y1/x2-x1

    (-9 + 3)/(-20 + 7 )

    -6/-13

    6/13 << that is the slope

  • Math Help Pleae -

    Okay, One last question. Perform the indicated operations

    (9x^2-7x-66)(+8x^2+9x)

    is this answer 17x^2+2x-66

  • Math Help Pleae -

    8x^2(9x^2 - 7x - 66) + 9x(9x^2 - 7x - 66)

    72x^4 + 25x^3 - 591^x2 - 594x

    I could be wrong on this one

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