The product of two numbers is 16. Express the sum of the squares of the two numbers as a function of a single variable.
......I am really lost!!!!
2007-02-25 00:54:38 · 7 answers · asked by nicki s 1 in Science & Mathematics ➔ Mathematics
If x and y are the two numbers, then xy=16. You want to express x^2 +y^2 in terms of only one variable. Well, you have y=16/x, so
x^2+y^2=x^2+(16/x)^2=x^2 +256/x^2.
2007-02-25 00:59:09 · answer #1 · answered by mathematician 7 · 5⤊ 0⤋
the numbers are x and 16/x
the sum of the squares are x^2+256/x^2
2007-02-25 01:03:51 · answer #2 · answered by raj 7 · 0⤊ 0⤋
If the pages are numbered n and n+a million, then: n x (n+a million) = 1190 => n^2 + n - 1190 = 0. =>(n-34)(n+35) = 0. considering the fact that n will no longer be able to be destructive, which skill n = 34. consequently the pages are numbered 34 and 35.
2016-12-14 05:15:24 · answer #3 · answered by ? 4 · 0⤊ 0⤋
let one of the no. be x
then the other no. is 16/x
The sum of their squares=x^2+(16/x)^2
2007-02-25 01:15:52 · answer #4 · answered by eissa 3 · 0⤊ 0⤋
Let nos. be x and y
xy = 16
x = 16/y
x² + y² = (16/y)² + y²
x² + y² = 256 / y ² + y²
2007-02-25 01:39:16 · answer #5 · answered by Como 7 · 0⤊ 0⤋
i would feel lost too but isnt 4x4
2007-02-25 01:02:35 · answer #6 · answered by Anonymous · 0⤊ 0⤋
ask your teacher for some hints or read your text book.
2007-02-25 00:58:28 · answer #7 · answered by Anonymous · 0⤊ 3⤋