Question

find the value of the expression 2 x² - x + x for x = -1​

Answer 1

Answer:

Adding, we have (x+1)(x−2)2x2−x−4−x=(x+1)(x−2)2(x−2)(x+1)=2

for values of x other than 2 or −1

Answer 2

Step-by-step explanation:

x(x−2)=9−2x

⟹x

2

−2x=9−2x

⟹x=±3

∴ Sum of the value of x=3−3=0