The base of a triangle is four less than twice the height. What would be the simplified expression to find the area?

Question

I'm so confused! PLEASE HELP!!!

Answer 1

We just need to take it step by step. First, here's what we know:

A = bh/2

b = 2h - 4

 

Now that we have some values, let's put it into our equation:

A = (2h - 4)h / 2

If we look inside of the parentheses, we can factor out a 2 from it:

A = 2(h - 2)h / 2

 

We have a multiplication of 2 and a division of two, so we can simplify that as:

2 / 2 = 1, and anything mult./div. by 1 is itself. We now have left:

A = (h - 2)h

 

We can then distribute that h to the parentheses and get:

A = h² - 2h

 

And there you go.