Question 1194004
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x = some unknown number
x^3 = the cube of a number
x^3 - 7 = decrease by 7
4x = four times the number


The given sentence translates to the equation x^3-7 = 4x


To solve this equation, you'll need to use graphing software. Cubic equations are notoriously difficult to solve by hand. Though some special crafted cubics are an exception.
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