simplify (x.sq-5)(x+5)+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 . we find the solution x³ + 5x² - 5x .
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