Hope this can help you. I tried to solve each one out and I tried to write notes on how I got the equation and the answer. Message me if you can't read something, my handwriting tends to be messy :)
Find the product. (2x+3)(2x+3)
2 answers:
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There is a formula which employs the use of determinants and which helps us calculate the area of a triangle if the vertices are given as . The formula is as shown below:
Area=
Now, in our case, we have:
, and
Thus, the area in this case will become:
Area=
Therefore, Area=
We know that area cannot be negative, so the area of the given triangle is <u>10 squared units</u>.
Answer:
-7x(x + 4)
Step-by-step explanation:
Not sure exactly what you're doing with this, but I know you're not solving it for x because there's no " = " there so I am assuming you're simplifying it as much as possible. I'm going with that.
First thing is to distribute through the parenthesis by multiplying 4x by 3x and then 4x by -7 to get:
Now combine like terms to get
The last thing you could do now is pull out what's common between each of those terms which is -7x. When you do that, you're left with
-7x(x + 4)