✨ Best Answer ✨
(4×10+5)²
=4×4×10×10+2×4×10×5+5×5
=16×100+4×100+5×5
=20×100+5×5
=(4×5)×100+(5×5)
✨ Best Answer ✨
(4×10+5)²
=4×4×10×10+2×4×10×5+5×5
=16×100+4×100+5×5
=20×100+5×5
=(4×5)×100+(5×5)
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