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Step-by-step Solution

Solve the equation $20^3+60x^2-80=0$

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Answer

$x=11.4891i,\:x=-11.4891i$

Step-by-step explanation

Problem to solve:

$20^3+60x^2-80=0$
1

Calculate the power $20^3$

$8000+60x^2-80=0$
2

Subtract the values $8000$ and $-80$

$7920+60x^2=0$

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Answer

$x=11.4891i,\:x=-11.4891i$
$20^3+60x^2-80=0$

Main topic:

Equations

Time to solve it:

~ 0.02 seconds

Related topics:

EquationsPrecalculus