Question

for polynomial (k^2-25)x^2 + 3x + 8 to be quadratic which of the following is true ?
a) k isn't equal to 5
b) k isn't equal to-5
c) both a and b
d) none of these
pls guys explain it step by step​

Answer 1

Step-by-step explanation:

if I put 5 and - 5 in place of k and when I solve it ... x square will get cancelled so answer is d)