Question

10(x²-1)=10(2+1)(x-1)​

Answer 1

Answer:

x=2

Step-by-step explanation:

($10(x^{2} -1)=10(2x-1)(x-1)\\x^{2} -1=\frac{10(2x-1)(x-1)}{10}\\ (x-1)(x+1)=(2x-1)(x-1)\\x+1=\frac{(2x-1)(x-1)}{(x-1)}\\ x+1=2x-1\\1+1=2x-x\\x=2$

Answer 2

Answer:

Step-by-step explanation:

10(x²-1)=10(2+1)(x-1)​

cancel 10 both sides

x²-1=(2+1)(x-1)

x²-1=3(x-1)

x²-1=3x-3

x²-3x+3-1=0

x²-3x+2=0

x²-2x-x+2=0

x(x-2)-1(x-2)=0

x-2=0,

x-1=0

x=2,x=1