Solution Videos Step-by-step Solution Problem to solve: $4\left(1-x^2\right)=1-x^2$ Specify the solving method Solve for xFind the rootsSolve by factoringSolve by completing the squareSolve by quadratic formulaFind break even pointsSuggest a method or feature Send Final Answer Sorry, we couldn't solve this problem right now. Please check back later or try another solving method.