assvecca assvecca

20-03-2021
Mathematics

contestada

given that x2 - y2 = 135 and x - y = 15 , find the value of (x+y)2

Respuesta :

Аноним Аноним

20-03-2021

Answer:

x² - y² = 135

<=> (x - y)(x + y) = 135

<=> 15(x + y) = 135

=> x + y = 135/15 = 9

=> (x + y)² = 81

Answer Link

Otras preguntas

Normal line to the curve y=ln(2x+a) at x=1 is perpendicular to x-4y+2 = 4ln3. Find the value of a.

A poem by a Postmodernist might not rhyme, and it might employ unconventional grammar and spelling. A poem by a _____, however, will follow an established forma

A 70kg person travels to a planet where he weighs 1750 N. What is the value of g on the that planet?

The Carolingian empire dissolved because __________.

What helps to ensure that the meaning of prose is clear to the reader

Evaluate 2|3y-8|+y if y =2.5

Which word is a preposition in the following sentence? Alissa bought her sister a jacket for winter.

Impact of The quebec act of 1774

-3x+7=6x-2 What would the variable be?

In the year 2000 Detroit, Michigan had a population of 1,144,646. What is this population rounded to the nearest hundred thousand?