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Jlenok [28]
3 years ago
9

The work of a student to solve a set of equations is shown below:

Mathematics
2 answers:
Zolol [24]3 years ago
3 0
He made erron in step 3. He forgot add 4. it should be  
-4m + 4m = -32 - 8n + 4n +4

Greeting
marusya05 [52]3 years ago
3 0
The error is found in step 3.

Here is what he did:

-4m + 4m = -32 - 8n + 4n <<<<<<<<<<<< What happened to +4???

0 = -32 - 4n

n = -8.

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2. If f(x) = x - 7 and g(x) = 2x + 5, then what is f(x) * g(x)?
AysviL [449]

Answer:

2x² - 9x - 35

Step-by-step explanation:

f(x) × g(x) = (x - 7)(2x + 5)

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3 years ago
PLEASE HELP, THANK YOU! :)
elena-s [515]

Steps to solve:

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0 = 0

All real numbers are solutions.

Set builder notation: {x | R}

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A I guess (finger crossed )
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