hnlswdhao hnlswdhao
  • 23-10-2021
  • Mathematics
contestada

w x and y are three integers w is 2 less than x y is 2 more than x prove that wy+ 4 =x^2

Respuesta :

tot1466
tot1466 tot1466
  • 23-10-2021

w + 2 = x

x + 2 = y

Cross multiply

y(w+2) = x(x+2)

wy + 2y = x^2 + 2x

make x the subject of the equation

x = y - 2

substitute this in place of (x) in 2x

wy + 2y = x^2 + 2(y-2)

wy + 2y = x^2 + 2y - 4

wy  + 2y - 2y + 4 = x^2

wy + 4 = x^2

Answer Link

Otras preguntas

what holds the atoms in plastic together
what is x=15 a a function and please explain the process
4/5 of what number is 60
The model A CDs burner burns 60 minutes of data in about 1.15 minutes. The model B CD burner Burns 60 minutes of data inanity 1.5 minutes. How much longer will
sandy has 200 dollars in her bank account if she writes checks for 19.98 what expression describes the change in her bank account
this is something that isn't a necessity but is nice to have (like a salt shaker or a telephone)
Write a real world problem for the two step equation 8b+6=38
How would you factor out 8w-6w^3?? I have a math test tomorrow and went completely blank. :(
The sum of the BLANK of the plane figure is called the perimeter
What is the value of the underlined digit 6035 (the 3 is underlined)