Evaluate by using identity : 75× 75 -2× 75× 25 + 25× 25 = _____________
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- First multiply
- second add
- Third subtract
75×75 =5,625
75×2=150
150×25=3,750
25×25 =625
5,625 -3,750+625
5,625+625-3,750
6,250 -3750
2500
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