How do I work this?
2006-08-21 15:26:15 · 6 answers · asked by Charlotte Sometimes 2 in Education & Reference ➔ Homework Help
its called the difference of squares
(c+4)(c-4)= c squared -16
2006-08-21 15:31:18 · answer #1 · answered by maverick 3 · 1⤊ 0⤋
Your question is incomplete.
If you mean C^2 - 16 = 0 then C = 4 or -4
If you mean C^2 - 16 then unless you know what C is, you can't determine the result.
For the former, you can do it in two different ways.
1)
C^2 - 16 = 0
C^2 = 16
C = +/-sqrt(16)
C= +/- 4
2)
C^2 - 16 = 0
C^2 - 4^2 = 0
(C+4)(C-4)= 0
C=4 or c=-4
2006-08-21 22:34:53 · answer #2 · answered by tkquestion 7 · 0⤊ 0⤋
If "C" is simply a variable, the expression needs to be set equal to some value in order to solve for C. If C is the speed of light, take 186,000mps or 300,000kps, square it and subtract 16.
2006-08-21 22:34:24 · answer #3 · answered by Anonymous · 0⤊ 0⤋
C is 4 because 4 time 4 is 16. Hope this helps. God bless.
2006-08-21 22:36:29 · answer #4 · answered by Krista~Z 2 · 0⤊ 0⤋
add 16 to both sides
c sqd = 16
sq. rt of both sides
c=4
2006-08-21 22:32:39 · answer #5 · answered by Spelunking Spork 4 · 0⤊ 0⤋
It's not an equation....
2006-08-21 22:31:45 · answer #6 · answered by Just Gone 5 · 0⤊ 0⤋