Answer:
x=5is greater than 7
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Step-by-step explanation:
390 inches long
The string = x
x = 390 inches
–x² + 12x + 5
x² + 3x
–2x² + 9x + 5
The sum of the above expression can be obtained as follow:
.... x² + 3x
+ –2x² + 9x + 5
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Thus, the sum of x² + 3x and –2x² + 9x + 5 is –x² + 12x + 5
