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Class 9 Mathematics के इस tag से जुड़े questions। हर question के साथ chapter, topic, level और difficulty दी गई है।

MathematicsWhich visual model can catch the mistake that (x+5)² is not x²+25?Class 9Exploring Algebraic IdentitiesVisual models of identitiesEasy MathematicsA student says that the degree of the polynomial \(6x^4-2x^2+9\) is 3 because it has three terms. Which statement correctly explains the student’s error?Class 9Introduction to PolynomialsDegree of a PolynomialHard MathematicsWhen √3 is formed from √2 in a square root spiral, which wrong idea should be avoided?Class 9Number SystemsSquare root spiralEasy MathematicsRima says that \(\sqrt{3}\) is irrational because its decimal expansion continues infinitely. What is the main flaw in her argument?Class 9Number SystemsProof of irrationality of square root 2 and square root 3Expert MathematicsA student says that \(\sqrt{2}+\sqrt{3}\) is irrational because the sum of two irrational numbers is always irrational. What is the correct evaluation of this statement?Class 9Number SystemsProof of irrationality of square root 2 and square root 3Hard MathematicsA student says, “Since \((\sqrt{2})^2 = 2\) and 2 is rational, \(\sqrt{2}\) must also be rational.” What is the correct error in this argument?Class 9Number SystemsProof of irrationality of square root 2 and square root 3Hard