solve by appropriate identies (x+5) (x^2-5x+25)
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= X² ( x + 5 ) -5 ( x + 5 ) + 25. = x³ + 5x² - 5x - 25 + 25. therefore , when we simplify this equation (x²-5) (x+5) +25
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Answer:- x³+125
Explanation:--
(x+5)(x²+25-5x)
=> As we know ,
(a³+b³) = (a+b)(a²+b²-ab)
=> Hence , ATQ,
(x+5)[x²+5²+(x)(5)]
=> So by formula, x³+5³
or, x³+125
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