1. Упростите
1) (2m-1)*(3m+2)=?
2) (3m-2)-(2m+1)+(m+4)=?
3) (3*(2*(3x-1)-4x)+1)-3x=?
4) (3a-b)*(b-a)+(4b-a)-(3a-2b)*(4b-a)=?
2. Вычислите
(-1)*2-(-3)*4*(-5)*6=?
((-49)^2-47^2)+((-34)-(-31)^2)=?
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