-4a+5(a-6b+8)= -4b-6(5a-5b)= 4(a+2b)+4(2b-5)= (a+2b)(3a-2b)-3a²=

-4a+5(a-6b+8)= -4a + 5a - 30b + 40 = a - 30b + 40 -4b-6(5a-5b)= -4b -30a + 30b = -30a + 26b 4(a+2b)+4(2b-5)= 4a + 8b + 8b - 20 = 4a + 16b -20 (a+2b)(3a-2b)-3a²= 3a² - 2ab +6ab -4b² - 3a² = 4ab -4b²

-4a+5a-30b+40=a-30b+40 26b-30a 4a+8b+8b-20=4a+16b-20 3a(kwadrat)-2ab+6ab-4b(kwadrat)-3a(kwadrat) =4ab -4b(kwadrat)

-4a+5(a-6b+8)=-4a+5a-30b+40=a-30b+40 -4b-6(5a-5b)=-4b-30a+30b=-30a+26b 4(a+2b)+4(2b-5)=4a+8b+8b-20=4a+16b+20 (a+2b)(3a-2b)-3a²=3a²-2ab+6ab-4b²=-4b²+4ab