xeniajanelly xeniajanelly

19-03-2021
Mathematics

contestada

PLZ help with this it should be super easy
plz and thx

PLZ help with this it should be super easy plz and thx class=

Respuesta :

Аноним Аноним

19-03-2021

Answer:

-m²+81

Step-by-step explanation:

Hello There!

9x-m=-9m

9x9=81

mx-m=-m²

9xm=9m

9m-9m=0

we would be left with

-m²+81

Answer Link

devishri1977 devishri1977

19-03-2021

Answer:

81 - m²

Step-by-step explanation:

Use (a + b)(a - b) = a² - b² identity

(9 + m)(-m + 9) = (9 + m)(9 - m)

= 9² - m²

= 81 - m²

Answer Link

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