(7x + 8)(7x - 9)
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x sq equalls 36 and x equalls plus or minus 6
y2-y-72 is an algebraic expression that can be factored as: (y+8)(y-9)
y squared-y-72 is an algebraic expression because it does not contain an equality sign.
350 minus 72 is 278.
8M - 4M - 6 - 3 + 5M = 82 - 1 9M - 9 = 64 - 1 9M - 9 = 63 9M - 9 +9 = 63 + 9 9M = 72 9M/9 = 72/9 M = 8