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olga nikolaevna [1]
3 years ago
9

3x-5)(x2+2x+1) Please show working

Mathematics
2 answers:
Lerok [7]3 years ago
8 0

Answer:

3x^3 + x^2 -7x - 5

Step-by-step explanation:

SOOOOOOO you use the distributive property and multiply by each term.

Lyrx [107]3 years ago
8 0

Answer:

3x^3 + x^2 -7x -5

Step-by-step explanation:

(3x-5)(x^2+2x+1) you multiply and then add to get to 3x^3 + x^2 -7x -5.

*For example (x+2)(x+3) will be x^2+5x+6 The same logic is applied.

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Step-by-step explanation:

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Tammy has scored 82, 78, and 93 on her previous three tests. What score does she need on her next test so that her average (mean
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Answer:

She needs a grade of 71 on her next text.

Step-by-step explanation:

Mean of a data-set:

The mean of a data-set is the sum of all values in the data-set divided by the number of values.

Tammy has scored 82, 78, and 93 on her previous three tests.

Thus, her grades are 82, 78, 93 and x, in which x is her grade in the fourth test.

There are 4 tests.

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3 years ago
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