wagnersw wagnersw
  • 21-11-2019
  • Mathematics
contestada

(2x-y)(3x+y)
A 6x^2 – xy – y^2
B 5x^2 – xy – y^2
C 6x^2 – xy – 2y^2
D 5x^2 – xy – 2y^2

Respuesta :

carlosego
carlosego carlosego
  • 03-12-2019

For this case we must solve the following product:

[tex](2x-y) (3x + y) =[/tex]

We apply distributive property considering that:

[tex]+ * + = +\\+ * - = -[/tex]

So:

[tex](2x) (3x) + (2x) (y) - (y) (3x) - (y) (y) =[/tex]

To multiply powers of the same base, the same base is placed and the exponents are added:

[tex]6x^{1 + 1} + 2xy-3xy-y^{1 + 1} =[/tex]

Different signs are subtracted and the sign of the major is placed:

[tex]6x ^ 2-xy-y ^ 2[/tex]

So, the solution is: [tex]6x ^ 2-xy-y ^ 2[/tex]

Answer:

Option A

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