What are the solutions of the equation x4 + 6x2 + 5 = 0? Use u substitution to solve.

x = i and x = i 5

X=+ i and x i 5

x=+ -1 and x= + -5

x= -1 and x= + - 5

The solutions of the equation are

Explanation:

Given that the equation is

We need to determine the solutions of the equation.

Let us substitute and

Thus, the equation becomes,

Factoring the equation, we get;

Substituting back and solve for x.

First, we shall substitute

Thus, we get;

Similarly, substituting , we get;

Thus, the solutions of the equation are

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step-by-step explanation:

1. when "a" is a root of a polynomial, (x -a) is a factor of it. for the three roots given, the factors of the desired polynomial are (x +2)(x -1/2)(x -3).

in order to make the leading coefficient be negative, we need to multiply this product by a negative number. any negative number will do, but we choose a small (magnitude) value that will eliminate the fraction: -2.

then

f(x) = -2(x +2)(x -1/2)(x -3) = -(x +2)(2x -1)(x -3)

= -(2x² +3x -2)(x -3)

= -(2x³ -3x² -11x +6)

f(x) = -2x³ +3x² +11x -6

2. a graph created by the desmos on-line graphing calculator is shown, and the zeros are highlighted.

3. as indicated in part 1, the multiplier of this equation can be anything and the zeros will remain the same. you want a negative leading coefficient, so the "anything" is restricted to any of the infinite number of numbers that will make that be the case.