Find all the zeros of the equation. -3x^4+27x^2+1200=0 PLEASE HELP and show work

Question

asked Jun 5, 2019 81.6k views

1 Answer

Herrmartell · Answer 1 · 2019-06-10T04:45:14+0000

Answer: x=−5 or x=5

Explanation:

−3x4+27x2+1200=0

Step 1: Factor left side of equation.

−3(x2+16)(x+5)(x−5)=0

Step 2: Set factors equal to 0.

x2+16=0 or x+5=0 or x−5=0

x=−5 or x=5