Question

(x + 1)(x-2) + x = 0 has​

Answer 1

Answer:

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

x^2-2x+x+x-2=0

x^2-2=0

x^2=2

x=√2

the vlue of x=√2

Answer 2

Answer: √2 and -√2

Step-by-step explanation:

(x+1)(x-2)=x^2-x-2

x^2-x-2+x=x^2-2=0

From the formula x^2-a=(x-√a)(x+√a)

We get that x=√2 Or -√2

Substituting x=√2, the equation becomes true.

Substituting x=-√2, the equation also becomes true.    

So, x=√2 and x=-√2 satisfy the equation