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Petra is practicing factoring by grouping. She wants to factor the polynomial 16xy - 4x2 + 28y – 7x. Her work is shown below.
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Answer #1

Taking 42. as common Petras factoring is correct. given, lozey-45+244-72 (42*44)-(42).Ga) +7.(49) -7.23 here, 7. os. Common

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