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fredd [130]
3 years ago
6

Multiply (4x-3w)(5x-7w)

Mathematics
2 answers:
nataly862011 [7]3 years ago
6 0

Answer:

20 {x}^{2}  - 43xw + 21 {w}^{2}

solution,

(4x - 3w)(5x - 7w) \\  = 4x(5x - 7w) - 3w(5x - 7w) \\  = 20 {x}^{2}  - 28xw - 15xw + 21 {w}^{2}  \\  = 20 {x}^{2}  - 43xw + 21 {w}^{2}

Hope this helps...

Good luck on your assignment..

andre [41]3 years ago
3 0

Answer:

20x² - 43xw + 21w²

Step-by-step explanation:

We use FOIL to expand the expression:

F - First

4x(5x) = 20x²

O - Outside

4x(-7w) = -28xw

I - Inside

-3w(5x) = -15xw

L - Last

-3w(-7w) = 21w²

20x² - 28xw - 15xw + 21w²

Combine like terms and add up using correct signs and you should get your answer.

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