Question

Solve x^4-34x^2=-225
a.3,-3 c.3,-3,5,-5
b.no solution d.3,-5

Answer 1

C.

\[x^{4}-34x ^{2}+255=0\]

Just plug in your answers to the equation, and if it comes out to zero, it's a solution. This function is also even, which means that it doesn't matter whether a number is positive or negative.

Answer 2

Oh thanks bro. I was confuses cause my teacher didnt really explan it correctly.

Answer 3

Can you help me with one more?