Question

помогите плиз плиз плиз​

Answer 1

2.10.

1) $10ab^3*(-a^2b)*0,5b^3=(-1*10*0,5)(a*a^2)(b^3*b*b^3)=-5*a^{1+2}*b^{3+1+3}=-5a^3b^7$

2) $0,3y^2*(-\frac{1}{3}x^4y^6)=x^4(-\frac{1}{3} *0,3)(y^2*y^6)=-0,1*x^4*y^{2+6}=-0,1x^4y^8$

3) $xy*(-x^5y^3)(-x^3y^8)=-1*(-1)*(x*x^5*x^3)*(y*y^3*y^8)=1*x^{1+5+3}*y^{1+3+8}=x^9y^{12}$

4) $1\frac{1}{6} pq*(-\frac{6}{7} p^9q^7)=(-\frac{6}{7} *\frac{7}{6} )(p*p^9)(q*q^7)=-1*p^{1+9}*q^{1+7}=-p^{10}q^8$