What are the solutions of the equation x4 – 9x2 + 8 = 0? use u substitution to solve.

Step-by-step explanation:

We have the following equation

To solve this problem, do:

then it has:

Then he has a second-degree equation.

To resolve factor.

You must find 2 numbers that when you add them get -9 and multiply them get 8.

These numbers are:

u = -1 and u = -8

Then it has:

and

Remember that

Then it has:

ANSWER

EXPLANATION

Given;

We can rewrite as

Let

This implies that,

This implies that,

But

This implies that,

part 1 answer = 8

part 2 answer = 72

step-by-step explanation:

part 1 explanation = add all of the numbers, then divide by how many numbers you have. so, 200/25 = 8.

part 2 explanation = not gonna lie, this is hard to explain, so just google how to do it.