Question 1197455
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The common practice is to use "^" (shift-6) when typing an exponent.<br>
I believe your equation is this:<br>
(m^2-1)x^2 - (m+3)x + (4-m^2) = {{{(m^2-1)x^2 - (m+3)x + (4-m^2)}}}<br>
The equation is quadratic whenever the coefficient of the x^2 term, m^2-1, is non-zero.<br>
m^2-1 is equal to 0 only when x=1 and when x=-1; so the equation is quadratic for all values of x EXCEPT 1 and -1.<br>
ANSWER: all x except 1 and -1<br>