The answer choices given in the online test are:
-2, 2, -1,1 and cannot be determined.
Can you pls explain the last line where you have equated the two equations..
i do understand that u have replaced x with x+2 in the equation 2x^2+bx+c
thus 2x^2+bx+c = 2 (x+2)^2 + b(x+2) +c
why are we equating the two equations ? and the increase in 12 is not accounted for? Can you pls explain the concept?
Oh, I missed the "+12" part. It should be there.
So, x is dependent on the value of "b" and thus cannot be determined.
If b=0; x=1/2; will satisfy the condition
If b=2; x=0; will satisfy the condition
If b=1002; x=(2-b)/4= (2-1002)/4=-250 will satisfy the condition.
Thus, there is no fixed value of x.
Please let me know if something is not clear.
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