After simplifying (7x^2-7x^2+10x-5), what will be the degree?
Answer and explanation
Correct answer: 1
The like terms 7x^2 and -7x^2 cancel each other. The simplified polynomial is therefore 10x-5. The highest power of x in it is 1, so its degree is 1. It is not 2 because the x^2 terms become zero after simplification. Exam tip: Always simplify a polynomial by combining like terms before finding its degree.
Frequently asked questions
What is the correct answer to this question?
1
Why is this the correct answer?
The like terms 7x^2 and -7x^2 cancel each other. The simplified polynomial is therefore 10x-5. The highest power of x in it is 1, so its degree is 1. It is not 2 because the x^2 terms become zero after simplification. Exam tip: Always simplify a polynomial by combining like terms before finding its degree.
Which subject and chapter does this question cover?
This is a Class 9 Mathematics question. Chapter: Introduction to Polynomials. Topic: Degree of a Polynomial.
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