# Factor differences of squares

Factor quadratic expressions of the general difference of squares form: (ax)^2-b^2. The factored expressions have the general form (ax+b)(ax-b).
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### Problem

The polynomial expression 36, y, start superscript, 3, end superscript, minus, 100, y can be factored as 4, y, left parenthesis, M, y, plus, g, right parenthesis, left parenthesis, M, y, minus, g, right parenthesis, where M and g are integers.
Sally wrote that g could be equal to 3.
Brandon wrote that g could be equal to 10.
Which student is correct ?
Please choose from one of the following options.