simplify the following expressions.
(a) 4m (m+2n)-3n(2m-n). class 7, subject math
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ANSWER:
4m^2 + 2mn + 3n^2
STEP BY STEP EXPLANATION :
4m × (m+2n) - 3n × (2m-n)
= 4m^2 + 8mn - 6mn + 3n^2
= 4m^2 +2mn +3n^2
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