Answer:
The correct answer is 5.
Step-by-step explanation:
When solving a mathematical operation, the correct thing is to separate in terms so as not to obtain an erroneous result.
The only signs that separate terms are addition and subtraction. <u>You cannot separate a term in a division or multiplication.
</u>
If you had operation 6 + 4: 2 + 1 =
The right thing would be for you to separate in terms of addition. Look at the result:
6 + 2 + 1 = 9
And see what would have happened if we separated it in the division:
10: 2 + 1 =
5 + 1 = 6
The results obtained are different. Therefore, if we obtained 6, the operation would be wrong.
Now, we have the following expression:
x2 - 10xy + 3y + y2 - 1
And we must remember that <u>between each incognita and a number there is a sign of multiplication</u>, although we do not see it written.
Therefore, the correct terms would be the following:
x2
-10xy
3y
y2
-1
Given this information, we can say that the number of terms in this expression is 5.
