00:01
So in this question, we have specific expressions, abcd, and we have to define which equation is equivalent to some operations here.
00:16
So the first one is this, 2x3 minus x minus 8.
00:20
So we need to match where we have the specific function of x here.
00:26
So where we have x to the cubic, we then consider the question and where we have x, we consider the coefficient.
00:34
When we don't have any x, we compute the operation with respect to that.
00:39
So doing that, we're going to get 2x to the cubic plus a x plus 4, and that is b.
00:49
Then the other one is negative 3x square plus x to the 4 plus x, and we are adding this to another equation to x to the 4 minus 7, plus 4x.
01:05
So this one here will match with this one, right? and the x is to the fourth, we will match with this...