Question

4 и 5 задание даю 30 баллов

Answer 1

4)D=64+132=196=14^2
x=(8+14)/2=11 или x=(8-14)/2=-3
x^2-8x-33=(x-11)(x+3)
10x+30=10(x+3)
(x-11)(x+3)/10(x+3)=(x-11)/10