davepera73 davepera73

06-11-2020
Mathematics

contestada

(x+3) (x+5)
=x•x+x•5+3•x+3•5
=x²+5x+3x+15
=x²+8x+15
"Has it been done correctly"

Respuesta :

loreal33 loreal33

06-11-2020

Yes, it has been done correctly.

It used the FOIL method, which is first(x and x), outer (x and 5), inner (3 and x), and last (3 and 5). And then you add the like terms.

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