bethrosa2002
bethrosa2002
15-11-2016
Mathematics
contestada
factorise y^2 - 169?????????????
Respuesta :
princegn
princegn
15-11-2016
=
y^2 - 169
= (y)^2 - (13)^2
= (y + 2)(y - 2)
Answer Link
candystarlover4
candystarlover4
15-11-2016
Step 1. Rewrite it in the form: [tex] a^{2} - b^{2} [/tex], where a = y and b = 13
[tex] y^{2} - 13^{2} [/tex]
Step 2.
Use
Difference of Squares:
[tex] a^{2} - b^{2} =(a+b)(a-b)[/tex]
[tex](y+13)(y-13)[/tex]
Done!
Answer Link
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