18abakar
18abakar 18abakar
  • 01-11-2016
  • Mathematics
contestada

factor 2a2 + 2b2 - 5ab

Respuesta :

Master72 Master72
  • 01-11-2016
(a - 2b) • (2a - b) is how you factor this using FOIL
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facundo3141592
facundo3141592 facundo3141592
  • 04-03-2020

Answer:

Using the relationship (x -y)^2 = x^2 + y^2 - 2x*y

We can assume that we have:

2a^2 = x^2

This means that x= √2*a

we also can assume tbat Y = √2*b

then we would have something like:

(√2*a - √2*a)^2 = 2a^2 + 2b^2 - 4ab

Where i see that in the written question there is a 5ab instead of a 4ab, but i guess this may be a typo

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