Guero22 Guero22
  • 22-03-2019
  • Mathematics
contestada

Select the product mentally.(r-s)^2

Respuesta :

hkh91
hkh91 hkh91
  • 22-03-2019

[tex](r - s) ^{2} \\ = {r}^{2} + {s}^{2} - 2rs[/tex]

First square and add the both terms one by one

You get

[tex] {r}^{2} + {s}^{2} [/tex]

then multiply them to get( - 2rs)

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