✨ Best Answer ✨
57²-43²=(57+43)(57-43)
=100×14
=1400
29²=(30-1)²
=30²+2×30×(-1)+1
=900-60+1
=841
✨ Best Answer ✨
57²-43²=(57+43)(57-43)
=100×14
=1400
29²=(30-1)²
=30²+2×30×(-1)+1
=900-60+1
=841
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