



 
Hi Leila, I can suggest two ways to approach this problem. First you could expand $\left(x  5 \right)^2 $ then simplify the expression $0=2 \left( x5 \right)^2+4$ and solve the resulting quadratic. The second approach is to rewrite the equation as $0 = 2 \left( x  5 \right)^2 + 4$ as $2 \left( x  5 \right)^2 = 4,$ divide both sides by $2,$ take the square root of each side and solve for $x.$ My suggestion is that you choose one approach and solve for $x$ then check your answer by using the other approach. Penny  


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