Question

Solve x^4 = 36x^2. Identify any double roots.

A. {0 (double root), 6, –6}

B. {–3, 3, 2 (double root)}

C. {0, 3, 2}

D. {6, –6}

Answer 1

Please help!

Answer 2

\[ x^4 = 36x^2\]
\[x^4-36x^2=0\]
\[x^2(x^2-36)=0\] is a good start

Answer 3

you get
\[x^2=0\] which means \(0\) is a double root
i bet you can find the other two

Answer 4

Is the correct answer A?

Answer 5

yep then \[x^2 - 36 = 0 \]
\[x^2 = 36\]
\[x = 6\]
\[x = -6 \]

Answer 6

so yeah A would be correct :)

Answer 7

Thank you so much!:)

Answer 8

No problem also thank @satellite73 :)