What are the solutions to the equation 5x^4=80 ?

The solutions to the equation 5x^4=80 are x=2,x=-2,x=2i,x=-2i

Find the zeros of 5x^4=80

The zeros of 5x^4=80 are x=2,x=-2,x=2i,x=-2i

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5 x^{4} = 80

x = 2, x = - 2, x = 2 i, x = - 2 i

Solution steps

5 x^{4} = 80

Divide both sides by

5

x^{4} = 16

Rewrite the equation with

u = x^{2}

and

u^{2} = x^{4}

u^{2} = 16

Solve

u^{2} = 16 : u = 16, u = - 16

u = 16, u = - 16

Substitute back

u = x^{2},

solve for

x

Solve

x^{2} = 16 : x = 2, x = - 2

Solve

x^{2} = - 16 : x = 2 i, x = - 2 i

The solutions are

x = 2, x = - 2, x = 2 i, x = - 2 i

n^{3} - 3 n = 40

2 x^{3} = - 3 x^{2} + 2 x

y, x = y^{4} - 16

0 = 10 x^{3} + 19 x^{2} - 5 x - 6

w^{6} = - 64

What are the solutions to the equation 5x^4=80 ?
The solutions to the equation 5x^4=80 are x=2,x=-2,x=2i,x=-2i
Find the zeros of 5x^4=80
The zeros of 5x^4=80 are x=2,x=-2,x=2i,x=-2i