Question

please tell correct answer of 13th question

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Answer 1

Step-by-step explanation:

SUM OF 3x+4 and 2x²-4x+5 is 2x² - x + 9

SUM OF 3x²-5x and -x²+2x+5 is 2x² - 3x+5

(2x²- x + 9) - (2x² - 3x + 5)

2x² - x + 9 - 2x² + 3x - 5

2x - 4 is the answer.

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Answer 2

Answer:

Metamorphic rocks started out as some other type of rock, but have been substantially changed from their original igneous, sedimentary, or earlier metamorphic form. Metamorphic rocks form when rocks are subjected to high heat, high pressure, hot mineral-rich fluids or, more commonly, some combination of these factors.

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