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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।

MathematicsA student claims that \(x^2-10x+25\) factorises as \((x-5)(x+5)\). What is the error in the student's claim?Class 9Exploring Algebraic IdentitiesQuadratic expressionsLevel 72HardMathematicsA student wrote \((x+4)^2\) as \(x^2+16\). What is the correct expression after fixing the error?Class 9Exploring Algebraic IdentitiesQuadratic expressionsLevel 73HardMathematicsA student wrote \((x+4)^2\) as \(x^2+16\). Which term is missing from the expansion?Class 9Exploring Algebraic IdentitiesQuadratic expressionsLevel 75MediumMathematicsRiya says that \(x^2+10x+16\) can be written as \((x+5)^2\). Which is the correct form of \(x^2+10x+16\) to identify the error in Riya’s statement?Class 9Exploring Algebraic IdentitiesQuadratic expressionsLevel 75MediumMathematicsRima wrote aaa(x+4)^2 as x^2+16. Which term is missing from her expansion?Class 9Exploring Algebraic IdentitiesQuadratic expressionsLevel 74MediumMathematicsReena says that expanding \((x+4)(x-4)\) gives \(x^2+16\). Which expression correctly identifies and fixes her error?Class 9Exploring Algebraic IdentitiesQuadratic expressionsLevel 74MediumMathematicsA student writes \((3x+2)^2\) as \(9x^2+4\). Which is the correct quadratic expression after correcting the error?Class 9Exploring Algebraic IdentitiesQuadratic expressionsLevel 74MediumMathematicsA student wrote \((x+5)^2\) as \(x^2+25\). What is the error in this expansion?Class 9Exploring Algebraic IdentitiesQuadratic expressionsLevel 73MediumMathematicsRiya expanded \((2x+1)^2\) as \(4x^2+1\). Which term is missing from her expansion?Class 9Exploring Algebraic IdentitiesQuadratic expressionsLevel 73MediumMathematicsA student wrote \((x+5)^2\) as \(x^2+25\). Which term has been omitted from the expansion?Class 9Exploring Algebraic IdentitiesQuadratic expressionsLevel 73MediumMathematicsA student expanded \((x+5)(x-2)\) as \(x^2+3x-10\). What is the correct evaluation of the student's answer?Class 9Exploring Algebraic IdentitiesQuadratic expressionsLevel 73MediumMathematicsWhat is the factorised form of (x^2+2xy+y^2-4z^2+4x+4y)?Class 9Exploring Algebraic IdentitiesFactorisationLevel 70ExpertMathematicsA student has factorised \(8p^3+q^3\) as \((2p+q)(4p^2-2pq+q^2)\). Which statement about the solution is correct?Class 9Exploring Algebraic IdentitiesFactorisationLevel 71HardMathematicsA student claims that \(6x^2-x-2=(3x+2)(2x-1)\). Which is the correct factorisation of \(6x^2-x-2\) that corrects the student's error?Class 9Exploring Algebraic IdentitiesFactorisationLevel 71HardMathematicsA student claims that the factorisation of \(x^2-9x+20\) is \((x-10)(x+2)\). Identify the error and choose the correct factorisation.Class 9Exploring Algebraic IdentitiesFactorisationLevel 69HardMathematicsA student claims that \(49a^2-70ab+25b^2=(7a-5b)^2\). Which statement about the claim is correct?Class 9Exploring Algebraic IdentitiesFactorisationLevel 69HardMathematicsA student claims that the factorisation of \(49a^2-64b^2\) is \((7a-8b)^2\). What is the error in the student's claim?Class 9Exploring Algebraic IdentitiesFactorisationLevel 71MediumMathematicsA student claims that \(49x^2-25y^2\) factorises as \((7x-5y)^2\). What is the error in the claim?Class 9Exploring Algebraic IdentitiesFactorisationLevel 71MediumMathematicsReema factorised \(x^2-9\) as \((x-3)^2\). What is the correct factorisation after fixing her error?Class 9Exploring Algebraic IdentitiesFactorisationLevel 71MediumMathematicsA student claims that \(49p^2-70pq+25q^2=(7p-5q)(7p+5q)\). What is the error in the factorisation?Class 9Exploring Algebraic IdentitiesFactorisationLevel 70Medium