Question

The sum of and 7x2 is 10x2

Answer 1

Answer:

The missing term is 3x²

Explanation:

Addition and subtraction can only take place between like terms.

For two terms to be like, both the variable and its degree must be the same in both terms

Now, consider the given terms:

First term is 7x² has the variable x with degree 2

The resulting term is 10x² has the variable x with degree 2

This means that the missing term is ax²

We need to get the value of "a"

This is done as follows:

ax² + 7x² = 10x²

x²(a+7) = 10x²

a+7 = 10

a = 10-7

a = 3

Therefore, the missing term is 3x²

Hope this helps :)