wykonaj mnożenia i przeprowadź redukcję wyrazów podobnych: a) 2a(x + 5y) + 3x(a – 5y) = b) -4b(2a – 8y) + 3y(b – 7a) = c) (-0,4y – 4)• 5x2 – 2y(x2 – 6) = d) 7b(5 + 3ax) – (2a – 5b) • 2bx = e) 12(5a – 2) – 8(6a – 7b) + 3(3a – 12b) =

a) 2a(x + 5y) + 3x(a – 5y) = 2ax + 10ay +3ax -15xy = 5ax+10ay-15xy b) -4b(2a – 8y) + 3y(b – 7a) = -8ab +32by+3by - 21ay =-8ab +35by -21y c) (-0,4y – 4)• 5x^ – 2y(x^ – 6) =-2x^y -20x^ -2x^y+12y=-4x^y -20x^ +12y d) 7b(5 + 3ax) – (2a – 5b) • 2bx = 35b +21abx - 4abx -10 b^x= 35b-10b^x+17abx e) 12(5a – 2) – 8(6a – 7b) + 3(3a – 12b) =60a-24-48a+56b +9a -36b = 21a -24 +20b

a) 2a(x + 5y) + 3x(a – 5y) = 2ax+10ay+3ax-15xy=5ax+10ay-15xy b) -4b(2a – 8y) + 3y(b – 7a) =-8ab+32by+3by-21ay= =-8ab+35by-21ay c) (-0,4y – 4)• 5x^ – 2y(x^ – 6) =-2x^y -20x^ -2x^y+12y=-4x^y -20x^ +12y d) 7b(5 + 3ax) – (2a – 5b) • 2bx =35b+21abx-4abx-10b²x= =35b+17abx-10b²x e) 12(5a – 2) – 8(6a – 7b) + 3(3a – 12b) =60a-24-48a+56b +9a -36b = 21a -24 +20b

a) 2a(x + 5y) + 3x(a – 5y) = 2ax+10ay+3ax-15xy=5ax+10ay-15xy b) -4b(2a – 8y) + 3y(b – 7a) =-8ab+32by+3by-21ay=-8ab+35by-21ay c) (-0,4y – 4)• 5x^ – 2y(x^ – 6) =-2x^y -20x^ -2x^y+12y=-4x^y -20x^ +12y d) 7b(5 + 3ax) – (2a – 5b) • 2bx =35b+21abx-4abx-10b²x= 35b+17abx-10b²x e) 12(5a – 2) – 8(6a – 7b) + 3(3a – 12b) =60a-24-48a+56b +9a -36b = 21a -24+20b