How do you factor by grouping this.
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How do you factor by grouping this.
What in the world is ^ that sign?
Princess means this:
Well, I had some trouble with that. It's a trial and error method.
If
Then, if (v-a) is a factor of f(v), then f(a) = 0.
So, you have to find the value of a for which f(a) = 0.
I tried f(1), giving f(1) = 6(1)^3 - 16(1)^2 + 21(1) - 56 = -45.
So, (v - 1) is not a factor.
I won't show everything I tried, it would be a mess, but I got (v - 8/3)
Check:
So, (3v - 8) is a factor of f(v).
Now, you can divide (6v^3 - 16v^2 + 21v - 56) by (3v - 8)
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