Question

$30 x {}^{2} + 103xy - 7y {}^{2}$
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Answer 1

Step-by-step explanation:

30x^2+103xy-7y^2

=30x^2+105xy-2xy-7y^2

=15x (2x+7y)-y (2x+7y)

=(15x-y)(2x+7y)

Answer 2

Step-by-step explanation:

the correct answer is (2x+7y)(15x-y)

full explanation is on above picture