规定一种新运算“*”,即“m*n"=(m+2)×3-n,例如2*3=(2+2)×3-3=9,根据规定解答下列问题:(1)求6*(-3)的值;(2)6*(-3)与(-3)*6的值相等吗?
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![规定一种新运算“*”,即“m*n](/uploads/image/z/5342900-68-0.jpg?t=%E8%A7%84%E5%AE%9A%E4%B8%80%E7%A7%8D%E6%96%B0%E8%BF%90%E7%AE%97%E2%80%9C%2A%E2%80%9D%2C%E5%8D%B3%E2%80%9Cm%2An%22%3D%28m%2B2%29%C3%973-n%2C%E4%BE%8B%E5%A6%822%2A3%3D%EF%BC%882%2B2%EF%BC%89%C3%973-3%3D9%2C%E6%A0%B9%E6%8D%AE%E8%A7%84%E5%AE%9A%E8%A7%A3%E7%AD%94%E4%B8%8B%E5%88%97%E9%97%AE%E9%A2%98%EF%BC%9A%EF%BC%881%EF%BC%89%E6%B1%826%2A%EF%BC%88-3%EF%BC%89%E7%9A%84%E5%80%BC%EF%BC%9B%EF%BC%882%EF%BC%896%2A%EF%BC%88-3%EF%BC%89%E4%B8%8E%EF%BC%88-3%EF%BC%89%2A6%E7%9A%84%E5%80%BC%E7%9B%B8%E7%AD%89%E5%90%97%3F)
规定一种新运算“*”,即“m*n"=(m+2)×3-n,例如2*3=(2+2)×3-3=9,根据规定解答下列问题:(1)求6*(-3)的值;(2)6*(-3)与(-3)*6的值相等吗?
规定一种新运算“*”,即“m*n"=(m+2)×3-n,例如2*3=(2+2)×3-3=9,根据规定解答下列问题:
(1)求6*(-3)的值;
(2)6*(-3)与(-3)*6的值相等吗?
规定一种新运算“*”,即“m*n"=(m+2)×3-n,例如2*3=(2+2)×3-3=9,根据规定解答下列问题:(1)求6*(-3)的值;(2)6*(-3)与(-3)*6的值相等吗?
(1)6*(-3)=(6+2)x3-(-3)=24+3=27
(2)(-3)*6=(-3+2)×3-6=3-6= -9
所以不相等
望采纳!感激不尽!
1. 6*(-3)=(6+2)×3-(-3)=27
2. 不相等
(-3)*6==(-3+2)×3-6=-9
6*(-3)=(6+2)*3-(-3)=27
2.(-3)*6=(-3+2)*6-3=-9,不相等