3 zadania na dzisiaj mi trzeba prosze szybko daje naj plisssss

Zad. 1 [latex]-6 a^{2} b-15a b^{2} +9ab=-3ab(2a+5b-3)[/latex] Odp: A Zad. 2 I. [latex]P=(ax+x)(a+1)=x(a+1)(a+1)=x (a+1)^{2} [/latex] Odp: C II. [latex]P= frac{1}{2} *( 2a^{2} +6a)*x=x( a^{2} +3a)=ax(a+3)[/latex] Odp: A III. [latex]P= frac{(ax+x)*2x}{2} =x(ax+x)= x^{2} (a+1)[/latex] Odp: B Zad. 3  a) [latex]6 x^{3} -27 x^{2} =3 x^{2} (2x-9)=3(4,5)^{2} *(2*4,5-9)=3* (4,5)^{2} *0=0[/latex] b) [latex]8 a^{3} +16 a^{2} b=8 a^{2} (a+2b)=8* 5^{2} (5+2*(-4))=8*25(5-8)=[/latex] [latex]=200*(-3)=-600[/latex] c) [latex]9x y^{2} +3 x^{2} y=3xy(3y+x)=3* frac{1}{3} * frac{2}{3} (3* frac{2}{3} + frac{1}{3} )=[/latex] [latex]= frac{2}{3} (2+ frac{1}{3} )= frac{2}{3} * frac{7}{3} = frac{14}{9} [/latex] d) [latex]15 a^{3} b^{2} c-10a b^{2} c^{3} =5abc(3 a^{2} b-2b c^{2} )=[/latex] [latex]=5*3*(-3)*(-1)(3* 3^{2} *(-3)-2*(-3)* (-1)^{2} )=45(-81+6)=[/latex] [latex]=45*(-75)=-3375[/latex]