Factorise : 80m2 - 125
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Answer:
5 (4m-5) (4m+5)
Step-by-step explanation:
80m2-125
=5 (16m2-25)
=5 (16m2+20m-20m-25)
=5 {4m(4m+5)-5(4m+5)}
=5 (4m-5) (4m+5)
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