化简求值:当m=1.5,b=0.8,c=0.3时,求3*m的平方-bc的值

化简求值:当m=1.5,b=0.8,c=0.3时,求3*m的平方-bc的值
化简求值:当m=1.5,b=0.8,c=0.3时,求3*m的平方-bc的值

化简求值:当m=1.5,b=0.8,c=0.3时,求3*m的平方-bc的值
=3*(3/2)²-0.8*0.3
=6.75-0.24
=6.51

3m² -bc
= 3×2.25 -0.8×0.3
= 6.75 - 0.24
= 6.51

m=1.5,b=0.8,c=0.3
3*m²-bc=3*2.25-0.8*0.3
=6.75-0.24
=6.51

6.5100

3*(1.5)^2-0.8*0.3=6.75-0.24=6.51

3*1.5²-0.8*0.3
=3*2.25-0.24
=6.75-0.24
=6.51