miraclecanlove miraclecanlove
  • 24-09-2021
  • Mathematics
contestada

What is the product of 9a + 4 and 6a -5

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tehtpyo tehtpyo
  • 24-09-2021
So we have (9a + 5) x (6a - 5)
So we can expand one bracket to get:

= {9a x (6a - 5)} + {5 x (6a - 5)}
= {54a^2 - 45a} + {30a - 25}

Now its simple, we open all the brackets and do simple addition of like terms:
= 54a^2 - 45a + 30a - 25
= 54a^2 - 15a - 25

And that’s the final answer.
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lily1931
lily1931 lily1931
  • 24-09-2021
ANSWERRR IS IN THE PICTURES
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