Video Transcript
Evaluate 𝑦 squared minus four plus
three if 𝑦 equals six.
Even though this expression has
three different operations, we always start with the same procedure. I’m sure you guessed copy down the
expression. And if you did, you would be right;
that’s the first thing we need to do. Next, we’re gonna replace 𝑦 with
six because that was our given value. As you solve more and more
complicated expressions, the most important thing you can remember is that you have
to follow the order of operations.
We have correctly substituted the
six for the 𝑦. But now, what operation comes
first? Since we don’t have any parentheses
or brackets in this problem, order of operations would tell us to go ahead and solve
your exponents next. So, I’ve solved for six squared
which equals 36 and copied the rest of the problem down. Following order of operations, I
now need to add and subtract from left to right. In this step, I subtracted four
from 36. And our next order of operations
step will be to add 32 plus three. Our final answer for this
expression when 𝑦 equals six, 𝑦 squared minus four plus three equals 35.
