nefeli88 nefeli88
  • 10-10-2020
  • Mathematics
contestada

can someone help with that?

if x+y=2, calculate:
P=4x (x-3)+4y(y-3)+8xy​

Respuesta :

Аноним Аноним
  • 10-10-2020

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

Answer Link

Otras preguntas

Compare and contrast biological psychology and cultural psychology. explain how and why a biological psychologist and a cultural psychologist might investigate
The formula for a trapezoid relates the area A, the two bases, a and b, and the height, h. A=1/2h(a+b) Solve for h.
How to find the position function from the velocity function?
How did improved farming lead to the development of government?
Write sentences by putting these words in the correct order. Use capital letters, the correct preterite form of the verb, and add punctuation. una / yo / carta
True or false: the barons were not expected to pay higher taxes.
Your sense of fulfillment decreases with the more money you spend after you reach what?
Given the functions j(x) = x2 + 3 and k(x) = x2 − x + 4, which operation results in a 2nd degree polynomial? A) Addition B) Subtraction C) Multiplication D) No
25.00 gal/min to L/s, Express your answer using four significant figures.
A car enthusiast is interested in studying the relationship between the asking price of used cars and their age. which is more naturally the explanatory variabl