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ACT Mathematics Videos 164 videos
ACT Math: Coordinate Geometry Drill 1, Problem 1. Which inequality is expressed by the number line?
ACT Math: Intermediate Algebra: Drill 3, Problem 1. Find the fifth number in the series.
ACT Math Intermediate Algebra Drill 2, Problem 2. How else can the expression be written?
ACT Math 2.4 Elementary Algebra 262 Views
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Description:
Elementary Algebra Drill 2: Problem 4. Factor the expression.
Transcript
- 00:02
Time for your daily dose of Shmoop...this won't hurt a bit.
- 00:06
Factor 4x squared y plus
- 00:08
16xy plus 12x squared plus 48x
- 00:12
And here are the potential answers...
- 00:18
Okay we have ourselves another factoring
Full Transcript
- 00:20
problem. What's the common thread or unit between
- 00:23
all four of these elements? Ahh well, there we've already given you a hint.
- 00:28
Yeah the number 4 part of it. What else?
- 00:31
X. Okay so there's a 4x common to all of these
- 00:36
and we can factor it out to make life oh so much simpler.
- 00:39
We now have an equation that looks like this: 4x times the quantity xy
- 00:44
plus 4y plus 3x plus 12 we have an equation here
- 00:48
a very common form. We can factor this down to the
- 00:52
quantity X plus 4 times the quantity y plus 3.
- 00:56
Here we go. So boom! The answer is B.
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