if m=2 , n= -1 , a=3m , b= 5n , so ,m³-n³+3mn=?
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0
Answer:
3.........................
Answered by
1
Answer:
answer is 1
Step-by-step explanation:
m=2 ,n=-1
a=3m=3×2=6
b=5n=5×(-1)=-5
m^3-n^3+3mn=2^3-(-1)^3+3×2×(-1)
=8-1+(-6)
=8-1-6
=8-7
=1
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