anonymous
  • anonymous
64w^2+144w+81
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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jamiebookeater
  • jamiebookeater
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OakTree
  • OakTree
Factoring?
anonymous
  • anonymous
Yes
anonymous
  • anonymous
(8w + 9)^2

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OakTree
  • OakTree
Okay. This a perfect square trinomial, or a PST. It factors as (8w+9)^2.
anonymous
  • anonymous
How did you get that?
OakTree
  • OakTree
The way you can tell is because first off, the first and last term are both squares of something. And second off, the middle term is twice the square root of the first and third term. So it's like this. 64w^2 is a square - its root is 8w. 81 is a square - its root is 9. 2*8w*9 is 144w, which is our middle term. So we know it's a PST. To factor, we take the two roots we have written down, and if the middle term is positive, we use a plus sign. If the middle term is negative, we use a minus sign. And we just write (8w+9)^2. That's it. Makes sense? Do you want me to go through another example with you?
anonymous
  • anonymous
Yeah I get it thanks ! :)

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