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tangare [24]
2 years ago
14

1. Rút gọn biểu thức A(x) = (x+2)(x+3)(x+5) - (x-1)(x+4)(x+7). Từ đó tìm tất cả các giá trị x sao cho A(x) = 0.

Mathematics
2 answers:
Contact [7]2 years ago
8 0

Answer:

778744

Step-by-step explanation:

387t98878989890

zepelin [54]2 years ago
4 0

x = -29/7

Step-by-step explanation:

A(x) = (x^2 + 5x + 6)(x + 5) - (x^2 + 3x - 4)(x + 7)

= (x^3 + 10x^2 + 31x + 30) - (x^3 + 10x^2 + 17x - 28) = 14x + 58

A(x) = 0 => 14x + 58 =0 => x = -58/14 = -29/7

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2 years ago
Write down the ratio of the total number of medals won by Russia to the total number of medals won by Germany.
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Step-by-step explanation:

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3 years ago
Please help me out !!! <br><br> *please answer asap*
mariarad [96]

Answer:

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Making sure the 5 is positive, remove the absolute value lines.

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