а)2a^3b*(-1.5ab^4)= -3*a^4*b^5
(x^n*x^m=x^(n+m))
б)(-a*b^3)*(-3/4*a^2*b)*(-4/3*b^7)=1(-a^3*b^11)= -a^3*b^11
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а)2a^3b*(-1.5ab^4)= -3*a^4*b^5
(x^n*x^m=x^(n+m))
б)(-a*b^3)*(-3/4*a^2*b)*(-4/3*b^7)=1(-a^3*b^11)= -a^3*b^11