The coefficient of x^{2} in the product of (x -5 )(x + 3)(x + 7) is[/tex]
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The coefficient of x^{2} in the product of (x -5 )(x + 3)(x + 7) is[/tex]
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Answer:
5
Step-by-step explanation:
add -5,3,7 and you will get it
this is the answer hope it helps
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(x - 5)(x + 3)(x + 7)
= (x - 5)(x² + 10x + 21)
= x(x² + 10x + 21) - 5(x² + 10x + 21)
= x³ + 10x² + 21x - 5x² + 50x + 105
= x³ + 5x² + 71x + 105
Therefore coefficient of x² is 5
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