Prove each equation is not an identity by giving one value of x that makes the equation false.
1. x^2+1 =(x+1)^2
Should I just use a variable like 5 and do
5^2+1 (26) = (5+1)^2 (36) and it is not an identity because they're not equal. Is that how it works?
2007-02-28 20:21:52 · 3 answers · asked by wordpuzzler_01 1 in Science & Mathematics ➔ Mathematics
Yup. You got it. That's *exactly* what that kind of problem means.
Good job, Dewd ☺
Doug
2007-02-28 20:26:54 · answer #1 · answered by doug_donaghue 7 · 0⤊ 0⤋
Yes. To prove that an equation is not an identity, you always have to find a value that makes it false.
However, I don`t think this is Trigonometry
2007-03-01 05:38:59 · answer #2 · answered by Carla 4 · 0⤊ 0⤋
I think that you have done exactly as the question suggests-------spot on!
2007-03-01 05:47:04 · answer #3 · answered by Como 7 · 0⤊ 0⤋