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atroni [7]
3 years ago
8

What is the value of the product (3-21) (3 + 21)?

Mathematics
1 answer:
stepladder [879]3 years ago
8 0

Multiply the two brackets together

(3-21)(3+21)

(3)(3)(3)(+21)(-21)(3)(-21*21)

9+63-63-441

- 441 because whenever multiplying a - negative number and a + positive number = - negative number

9-441

= -432

Answer: -432

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Step-by-step explanation:

The number will be represent by x .

The number is being divided by 5  so we can represent by the expression x/5.

After than is being added to 18  so we will add 18 to the expression.

x/5 + 18 .

It has to equal to 9 less than 62 and 9 less than 62 is the same as the expression  62 -9.

Whole equation will be   x/5 + 18 = 62 - 9  

\frac{x}{5} + 18 = 62 - 9     Combine like terms on the right side

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      -18     -18

x/5 = 35     Multiply both side by 5.

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This means the original number is 175.

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