stewartoliver26 stewartoliver26

03-06-2020
Mathematics

contestada

If (x + y)^2 = 1 and xy = -4, what is the value of x^2 + y^2?

Respuesta :

ronhagrid310 ronhagrid310

03-06-2020

Answer:

[tex](x + y)^{2} = 1\\xy = -4\\x^{2} + y^{2} \\= x^{2} + 2xy + y^{2} - 2xy \\= (x^{2} + 2xy + y^{2}) - 2xy\\= (x+y)^{2} - 2xy\\= 1 - 2 *(-4) \\= 9[/tex]

Hope this helps!

:)

Answer Link

Otras preguntas

Which occurs during transcription? DNA is copied to create a second DNA strand. mRNA codons and tRNA anticodons assemble amino acids. DNA is unzipped with the a

what is the Egyptian goddess Bastet role??

Early Renaissance music was much more complex, more fragmented, and more dissonant than that of the Middle Ages. True False

autobiography of a calendar

Which of the following prohibited American colonists from settling west of the Appalachian Mountains? the Proclamation of 1763 the Townshend Acts the Treaty of

what is 33:60 as a fracton

1) Shane works at a computer store. If he earns $20.93 from a 7% commission on the sale of a printer, what is the price of the printer? 2) Kayla earns a weekly

Explain the four quantum numbers

After Charlemagne's death, his kingdom declined due to all of the following except a. Louis the Pious, his son, was weak and short sighted. c. Muslims, Slavs, a

In which of the following scenarios would the Board of Governors be most likely to intervene? (5 points) Economic data for the year are released and require ana