Express (x 2 + 8x + 15) (x 2 – 8x + 15) as a difference of two squares.

Dear student,

We have,x2+8x+15x2-8x+15=x2+15+8x×x2+15-8xusing a2-b2=a+b×a-b=x2+152-8x2which is expressed as difference of two squares. 

Regards

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