Question

60(х+2)-60(х-2)=45(х-2)(х+2)

Answer 1

файл

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bb7f032945372abea883c4daeca60907.pdf

Answer 2

60(x+2-x+2)=45(x^2-4)

240=45x^2-180

45x^2=420

x^2=28/3

x=+-sqrt{28/3} 

bb7f032945372abea883c4daeca60907.pdf