Question

X^4+13^2+42=0 solve for x

Answer 1

Answer:

x = -28

Step-by-step explanation:

x4 + 13x2 + 42 = 0

Reorder the terms:

42 + 13x2 + x4 = 0

Solving

42 + 13x2 + x4 = 0

Solving for variable 'x'.

Factor a trinomial.

(7 + x2)(6 + x2) = 0

Simplifying

7 + x2 = 0

Solving

7 + x2 = 0

Add '-7' to each side of the equation.

7 + -7 + x2 = 0 + -7

Combine like terms: 7 + -7 = 0

0 + x2 = 0 + -7

x2 = 0 + -7

Combine like terms: 0 + -7 = -7

x2 = -7

Simplifying

x2 = -7 = -28