Solve x^8-3x^4+2 by rewriting the equation using the substitution of u as a quadratic equation. (show work)

 (x - 1)(x + 1)(x² + 1)(x⁴ - 2)

Step-by-step explanation:

Given: x⁸ - 3x⁴ + 2

Let u = x⁴

then we get: u² - 3u + 2

Factor: (u - 1)(u - 2)

Substitute (replace u): (x⁴ - 1)(x⁴ - 2)    repeat these steps for x⁴ - 1  

x⁴ - 1

Let u = x²

then we get: u² - 1

Factor: (u - 1)(u + 1)

Substitute (replace u): (x² - 1)(x² + 1)         factor x² - 1

x² - 1

Factor: (x - 1)(x + 1)

Next, put all the factors together.  You should have 8 x's (degree of 8)

(x⁴ - 2)(x² + 1) (x - 1)(x + 1)

step-by-step explanation:

you can add the two numbers and divide the result by 2. or you can find the gap between the two numbers and add half of this to the smaller number.

60°

step-by-step explanation:

the measure angle of c in an isosceles triangle abc is 60° because in isosceles triangle,the measures of all the angles is 60°.