Pomożecie ? Mam na jutro ;-; Zad 1 a)2a(x+5y)+3x(a-5y)= b)-4b(a-8y)+3y(b-7a)= c)(0,4y-4)5x2 "do potęgi 2"-2y(x2"do potęgi 2"-6) d)7b(5+3ax)-(2a-5b)2bx= e)(4a-b)5-(b+2a)9+7(3a-4b)= f)12(5a-2)-8(6a-7b)+3(3a-12b)= MAM NA JUTRO ;-;-;-;-;-;--;-;--;-;;

a) 2a(x+5y)+3x(a-5y)= 2ax+10ay+3xa-15xy= 5ax+ 10ay-15xy b) -4b(a-8y)+3y(b-7a)= -4ba+32by+3yb-21ya=-4ba+35by-21ya c) d) 7b(5+3ax)-(2a-5b)2bx=35b+21ax-4abx+10bbx e) (4a-b)5-(b+2a)9+7(3a-4b)=20a-5b-9b-18a+21a-28b=23a-42b f) 12(5a-2)-8(6a-7b)+3(3a-12b)=60a-24-48a+56b+9a-36b=21a+20b-24 :))

a).2a(x+5y)+3x(a-5y) = 2ax+10ay+3ax-15xy = 5ax+10ay-15xy b).-4b(a-8y)+3y(b-7a) = -4ab+32by+3by-21ay = -4ab-21ay+35by c).(0,4y-4)5x² -2y(x²-6) = 2x²y-20x²-2x²y+12y = -20x²+12y d).7b(5+3ax)-(2a-5b)2bx = 35b+21abx-4abx+10b²x = 17abx+35b+10b²x e).(4a-b)5 -(b+2a)9 +7(3a-4b) = 20a-5b-9b-18a+21a-28b = 23a-42b f).12(5a-2)-8(6a-7b)+3(3a-12b) = 60a-24-48a+56b+9a-36b = 21a+20b-24