Answer:
see below
Step-by-step explanation:
Let's solve your equation step-by-step.
x4−16x2=x2+18
Step 1: Subtract x^2+18 from both sides.
x4−16x2−(x2+18)=x2+18−(x2+18)
x4−17x2−18=0
Step 2: Factor left side of equation.
(x2+1)(x2−18)=0
Step 3: Set factors equal to 0.
x2+1=0 or x2−18=0
x=4.242640687119285 or x=−4.242640687119285
Answer:
x=4.242640687119285 or x=−4.242640687119285
