MCQ Practice Arena
Zeroes, Factors and Identities — Build the Algebra Foundation That Carries You Forward
Polynomials in Class IX focuses on terminology (degree, coefficient, zero), the Remainder and Factor Theorems, and algebraic identities. These MCQs are direct and formula-driven — 70% can be solved by substitution or identity application. CBSE exams award 1–2 MCQs from this chapter; NTSE uses factor theorem and identity-based reasoning. The five key identities alone cover 30% of all questions.
Recall these cold before attempting MCQs — they appear in >70% of questions.
Remainder Theorem MCQs: to find remainder when p(x) is divided by (x−a), simply compute p(a). Factor Theorem: (x−a) is a factor if and only if p(a) = 0 — test by substitution. For identity MCQs, recognise the pattern first (is it a²−b²? a cubic? a+b+c form?) then substitute. For degree MCQs, the degree is the highest power of the variable — ignore coefficients.
Work through each rung in order — do not jump to Hard before mastering Easy.
Identify degree and type, find zeroes by substitution, apply (a+b)² and a²−b²
Remainder theorem with quadratics/cubics, factor theorem to find k
Cubic factorisation, a³+b³+c³−3abc identity, multi-step simplification
CBSE — remainder + factor theorem; NTSE — identity-based computation
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