Sagot :
ALGEBRAIC EXPRESSION
Solve: (x-5)(x²+2x+1)
ANSWER
x³ - 3x² - 9x - 5
SOLUTION
» x(x² + 2x + 1) −5 (x² + 2x + 1)
» x³ + 2x² + x - 5 (x² + 2x +1)
» x³ +2x² + x − (5x² + 10x + 5)
» x³ +2x² + x − 5x² − 10x − 5
» x³ + (2x² −5x²) + (x − 10x) − 5
» x³ + (2x² −5x²) + (x − 10x) − 5
x³ - 3x² - 9x - 5 is the answer
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