mayakendal mayakendal

16-07-2021
SAT

contestada

What is the value of the expression
x² + 2x - 2xy – 2y + y^2 when x - y = 50 ?

Respuesta :

LammettHash LammettHash

17-07-2021

x ² + 2x - 2xy - 2y + y ² = (x ² - 2xy + y ²) + 2 (x - y)

… = (x - y)² + 2 (x - y)

… = 50² + 2 × 50

… = 2600

Answer Link

Otras preguntas

Sammie pays $30 for a bag that she buys at a discount of 50%. What is the price of the bag without the discount? A. $30 B. $45 C. $60 D. $80

Should migration be free throughout the world

answer the ones you want to. At least answer one… I have to do 2 pages of homework I need this done I have school tomorrow.. Have no idea how to do this. Plea

Hey! i need some help with a math question if anyone doesn't mind helping- 35 = 4x + 7 yes, this is a very simple equation but i have the brain of a 5th grader

this is the question. solve (3.4)x(0.2)

Fill in the blanks: Among the places settled by the Vikings was ____________.

Does Chaucer’s narrator appear to hold more favorable views of people from one class or background over another? Explain your opinion with details from the text

Look at the graph below. What is the x-intercept?

A place where the sea remembers

−3.6−1.9t+1.2+5.1t Khan academy pls help