what is the cube of x +7
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It is the real solution of the equation x = 7. The cube root of 7 is expressed as ∛7 in the radical form and as (7)⅓ or (7)0.33 in the exponent form.
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>> (x + 7)³
= x³ + 3x²(7) + 3x(7²) + 7³
= x³ + 21x² + 147x + 343
PS: formula used is
(a + b)³ = a³ + 3a²b + 3ab³ + b³
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