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mckenzieandjesus

  • one year ago

Find the missing coefficient. (4d-4)(3d-2)= 12d^2 + blank d+8

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  1. mckenzieandjesus
    • one year ago
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    4 –20 –4 20

  2. arivillafana
    • one year ago
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    LHS = (4d-4)(3d-2) = (4d)(3d) + (4d)(-2) + (-4)(3d) + (-4)(-2) = 12d^2 – 8d – 12d +8 = 12d^2 – 20d + 8 ------ (1) But RHS = 12d^2 + _d + 8 ---------(2) Therefore from (1) and (2), Missing Coefficient is -20.

  3. jdoe0001
    • one year ago
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    hint: expand and simplify the left-hand-side

  4. calculusxy
    • one year ago
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    Use the FOIL method.

  5. mckenzieandjesus
    • one year ago
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    \[\left( 4d-4 \right)\left( 3d-2 \right)=12d^2+[blank]d + 8\]

  6. arivillafana
    • one year ago
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    I just gave her the answer and everyone is ignoring it lol

  7. jdoe0001
    • one year ago
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    yes, so expand and simplify the left-hand-side it'd end up in a quadratic, and you'd see the middle term :)

  8. calculusxy
    • one year ago
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    \[(4d-4)(3d-2) = 4d(3d) \times 4d(-2) \times -4(3d) \times -4(-2)\]

  9. calculusxy
    • one year ago
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    I am pretty sure that this is the foil method right?

  10. calculusxy
    • one year ago
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    |dw:1444262337064:dw|

  11. mckenzieandjesus
    • one year ago
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    what do u mean by expand?

  12. mckenzieandjesus
    • one year ago
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    oh okay

  13. mckenzieandjesus
    • one year ago
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    Thank you guys!

  14. calculusxy
    • one year ago
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    Did you get your answer?

  15. mckenzieandjesus
    • one year ago
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    Yes well @arivillafana gave it to me

  16. mckenzieandjesus
    • one year ago
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    Could u help me with this question? Match the expression with its name. 3x3 – 3x + 3 quadratic binomial cubic trinomial fourth-degree monomial not a polynomial

  17. arivillafana
    • one year ago
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    cubic

  18. mckenzieandjesus
    • one year ago
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    Are u sure?

  19. mckenzieandjesus
    • one year ago
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    I have a great grade right now & just dont wanna loose it haha

  20. arivillafana
    • one year ago
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    that's what i think the expression has 3 terms a leading term with a power of 3 is a cubic

  21. mckenzieandjesus
    • one year ago
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    Oh okay ur right

  22. mckenzieandjesus
    • one year ago
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    @calculusxy when i calculated that i came up with 132?

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