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san4es73 [151]
3 years ago
9

Can someone help with that?if x+y=2, calculate: P=4x (x-3)+4y(y-3)+8xy​

Mathematics
1 answer:
olganol [36]3 years ago
6 0

Answer:

Step-by-step explanation:

P = 4x(x - 3) + 4y(y - 3) + 8xy

  = 4x² - 12x + 4y² - 12y + 8xy

  = (4x² + 8xy + 4y²) - (12x + 12y)

 = 4(x² + 2xy + y²) - 12(x + y)

 = 4(x + y)² - 12(x + y)

x+y =2 ⇒ P = 4.2² - 12.2 = 16 - 24 = -8

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Answer:

2y^3-7y^2+7y

Step-by-step explanation:

7y - 2y^3 + 5y^2 - (  12y^2 – 4y^3)

Distribute the minus sign

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Combine like terms

2y^3-7y^2+7y

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2 years ago
People enjoyed attending the concert in the park. Twice as many men as women attended the concert. If the total attendance was 7
vazorg [7]
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3 years ago
Read 2 more answers
Check attachment below
tresset_1 [31]

Answer:

170

Step-by-step explanation:

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wx = 2(42x + 1)

We can add up that and the other arcs to 360.

2(42x + 1) + 29x - 1 + 65x + 3

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178x = 356

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84(2) + 2 = 170

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3 years ago
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2 years ago
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3 years ago
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