lexlez456
lexlez456
28-08-2018
Mathematics
contestada
Factor
[tex] {9x}^{2} - {25y}^{2} [/tex]
Respuesta :
gmany
gmany
02-09-2018
[tex] \text{Use}\ (a-b)(a+b)=a^2-b^2\\\\9x^2-25y^2=(3x)^2-(5y)^2=(3x-5y)(3x+5y) [/tex]
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