RRB Government Jobs Exams

Carter is solving this equation by factoring.
10x^2 + 25x + 15 = 0
Which expression could be one of his correct factors?

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RRB Other Question

What quantity should be added to both sides of
this equation to complete the square?
x^2 + 8x = 5 What are the solutions for the quadratic
equation x^2 + 6x = 16?