lisa989 lisa989

17-04-2022
Mathematics

contestada

If x²+ y²= 80 and xy = 12, find the value of (x - y)².

Respuesta :

loneguy loneguy

17-04-2022

[tex](x-y)^2\\\\=x^2+y^2 -2xy\\\\=80-2(12)\\\\=80-24\\\\=56[/tex]

Answer Link

ivanthegorilla30 ivanthegorilla30

17-04-2022

We need to factorise (x−y) 2

We know the identity (a−b)2 =a2 −2ab+b2

Thus we have (x−y)2 =x2 −2xy+y2

Answer Link

Otras preguntas

Please help! Today is my last day I can finish this before finals. At what point do these graphs intersect? y=x^2+3x-5 y=4x-1 I know that they intersect at (3,

Read A. E. Houseman's "Loveliest of trees, the cherry now": Loveliest of trees, the cherry now Is hung with bloom along the bough, And stands about the woodlan

Luna ray has 5 orange picks and no green picks you add some green picks so 1 in every 3 picks is orange. How many picks are there now?

How do you Write 29/9 as a mixed number.

According to the friar how are humans like plants

The vertical motion of a seat on a Ferris wheel can be described by the equation y = 25 cos ( π t 3 ) + 26 . What is the diameter of the wheel in feet?

Read this excerpt from Levitt and Dubner’s Freakonomics. The incentive scheme that rules sumo is intricate and extraordinarily powerful. Each wrestler maintain

HELLLPPPPPP!!!!!!!!!!!

The equation 10x + 12 = $72.00 shows the total cost for x people attending a concert. How many people attended the concert A) 4 people B) 5 people C) 6 people

Given the context of the passage, what does the idiom "cakes and ale" mean? presents wrongdoing good food wild revelry