49.5(0.506-x)(0.253-x)=4x^2

How to make it in quadratic equation

Please help with step by step. thank u so much

49.5(0.506-x)(0.253-x)=4x^2

(0.506-x)(0.253-x)
0.506*0.253-0.506x-0.253x+x2
simplify.
Then multiply that simplifed set up by 49.5, collect terms, put into quadratic form and solve.