0 reads0 ratings0 helpful
If (x^2+9 \neq 0), what is the simplified form of (\dfrac{x^4-81}{x^2+9})?
Advertisement
Answer and explanation
Correct answer: (,x^2-9,)
(x^4-81=(x^2-9)(x^2+9)), so the simplified form is (x^2-9). In exams, treat (x^4) as ((x^2)^2) while factoring.
Frequently asked questions
What is the correct answer to this question?
(,x^2-9,)
Why is this the correct answer?
(x^4-81=(x^2-9)(x^2+9)), so the simplified form is (x^2-9). In exams, treat (x^4) as ((x^2)^2) while factoring.
Which subject and chapter does this question cover?
This is a Class 10 Mathematics question. Chapter: Polynomials. Topic: Operations on real numbers and the laws of exponents.
Student feedback
Was this question useful?
Was this question useful?
👍 0 Helpful 👎 0 Not helpful
Difficulty
Easy0%
Medium0%
Hard0%
Was the explanation clear?
Yes 0% No 0%
0 responsesStudent Reviews
No published reviews yet.
Advertisement