Question

x - 6 \6 + x - 3 \3 = x - 4 \4 + x - 5 \5 ​

Answer 1

Answer:

x-6/2=9x-40/20

Step-by-step explanation:

10x-60=9x-40

x=-40+60

x=20

Answer 2

(x−5)(x−7)(x+6)(x+4)=504{(x−5)(x+4)}{(x−7)(x+6)}=504(x2−x−20)(x2−x−42)=504

Put x2−x=t

(t−20)(t−42)=504t2−62t+840=504t2−62t+336=0t2−6t−56t+336=0t(t−6)−56(t−6)=0(t−56)(t−6)=0t=56,6x2−x=t

For t=56

x2−x=56x2−x−56=0x2−8x+7x−56=0x(x−8)+7(x−8)=0(x+7)(x−8)=0