Factor 49s^2-64t^2

Math
49s2-64t2
Rewrite 49s2 as (7s)2.
(7s)2-64t2
Rewrite 64t2 as (8t)2.
(7s)2-(8t)2
Since both terms are perfect squares, factor using the difference of squares formula, a2-b2=(a+b)(a-b) where a=7s and b=8t.
(7s+8t)(7s-(8t))
Multiply 8 by -1.
(7s+8t)(7s-8t)
Factor 49s^2-64t^2

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