Solve in real numbers the equation
\displaystyle \-x+sqrt{1-x^{2}}\-=sqrt{2}\left(2x ^{2}-1\right)\-x+sqrt1−x
2
\-=sqrt2(2x
2
−1).

The ivring berlin learning center would like a possible net profit of $650,000 on its new resource manual it sells to schools. the fixed costs for producing the manual are $780,000 and the variable cost per package is $19.85. if the estimated unit sales are 1,250,000 units, what selling price unit should the ivring berlin learning center try?