What are the solutions to the equation 81=1.5^2\times x^9 ?

The solutions to the equation 81=1.5^2\times x^9 are

Find the zeros of 81=1.5^2\times x^9

The zeros of 81=1.5^2\times x^9 are

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81 = 1. 5^{2} \cdot x^{9}

Solution steps

81 = 1. 5^{2} x^{9}

Switch sides

1. 5^{2} x^{9} = 81

Divide both sides by

2.25

x^{9} = 36

Rewrite the equation with

u = x^{3}

and

u^{3} = x^{9}

u^{3} = 36

Solve

Substitute back

u = x^{3},

solve for

x

Solve

The solutions are

x^{4} + 5 x^{3} + 5 x^{2} - 5 x - 6 = 0

x^{3} - 8 x^{2} + 22 x - 21 = 0

x^{4} + x^{3} - 3 x^{2} - 4 x - 4 = 0

y, x^{4} + y^{4} = 0

x^{4} + 2 x^{3} + 4 x^{2} - 2 x - 5 = 0

What are the solutions to the equation 81=1.5^2\times x^9 ?
The solutions to the equation 81=1.5^2\times x^9 are
Find the zeros of 81=1.5^2\times x^9
The zeros of 81=1.5^2\times x^9 are