hanmarti419 hanmarti419
  • 18-07-2018
  • Mathematics
contestada

please help me out with this problem !!

please help me out with this problem class=

Respuesta :

altavistard
altavistard altavistard
  • 28-07-2018

(9t-4)(-9t-4) fits the pattern (a+b)(a-b), whose product is a^2-b^2.

We could write this as (-4+9t)(-4-9t), which, following this pattern, would be:

16 - 81t^2. The second answer is the correct one.

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