Question

25msquare -40mn+16nsquare

Answer 1

ANSWER IS HERE

${a}^{2} + 2ab + {b}^{2} = ( {a + b})^{2}$



${5m}^{2} + 2 \times 5m \times 4 n+ {4n}^{2}$




$(5m + 4n) {}^{2}$



HOPE IT HELPS YOU




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