Given the expression 5a^2b – 13ab + 7a^3 – 4b, do the following as instructed below:
Put it in decending order.
I got 7a^3+5a^2b-4b-13ab. Is it correct? If not please correct me.
Switch your last two terms.
To put the given expression, 5a^2b - 13ab + 7a^3 - 4b, in descending order, we need to arrange the terms according to the degree of "a" and "b".
Starting with the highest degree of "a," we have:
7a^3
Next, let's consider the next highest degree of "a":
5a^2b
Then, we consider the terms involving only "b":
-13ab - 4b
Therefore, the expression in descending order is:
7a^3 + 5a^2b - 13ab - 4b
You have rearranged the terms correctly. Well done!