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Quadratic Expressions

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

MathematicsWhich of the following expressions is a perfect-square trinomial in \(x\)?Class 9Exploring Algebraic IdentitiesQuadratic expressionsLevel 74Medium MathematicsIn which quadratic form can (x^2+2xy+y^2) be seen?Class 9Exploring Algebraic IdentitiesQuadratic expressionsLevel 74Medium MathematicsWhat is (9x^2+24x+16) equal to?Class 9Exploring Algebraic IdentitiesQuadratic expressionsLevel 74Medium MathematicsWhat is the perfect square form of (4x^2-12x+9)?Class 9Exploring Algebraic IdentitiesQuadratic expressionsLevel 74Medium MathematicsReena says that expanding \((x+4)(x-4)\) gives \(x^2+16\). Which expression correctly identifies and fixes her error?Class 9Exploring Algebraic IdentitiesQuadratic expressionsLevel 74Medium MathematicsWhich feature of the quadratic expression \(x^2+10x+25\) shows that it can be written as \((x+5)^2\)?Class 9Exploring Algebraic IdentitiesQuadratic expressionsLevel 74Medium MathematicsRiya expanded \( (x+4)^2 \) as \(x^2+16\). Which term is missing from her expansion?Class 9Exploring Algebraic IdentitiesQuadratic expressionsLevel 74Medium MathematicsA student writes \((3x+2)^2\) as \(9x^2+4\). Which is the correct quadratic expression after correcting the error?Class 9Exploring Algebraic IdentitiesQuadratic expressionsLevel 74Medium MathematicsWhich of the following quadratic expressions can be factorised directly using the identity \(a^2-b^2=(a-b)(a+b)\)?Class 9Exploring Algebraic IdentitiesQuadratic expressionsLevel 74Medium MathematicsWhat is (k) to make (x^2-8x+k) a perfect square?Class 9Exploring Algebraic IdentitiesQuadratic expressionsLevel 74Medium MathematicsWhat should be the value of (k) to make (x^2+6x+k) a perfect square?Class 9Exploring Algebraic IdentitiesQuadratic expressionsLevel 74Medium MathematicsWhat is the common factor in (2x^2+5x)?Class 9Exploring Algebraic IdentitiesQuadratic expressionsLevel 74Medium MathematicsIf a, b and c are constants, which condition is necessary for the expression \(ax^2+bx+c\) to be a quadratic expression in x?Class 9Exploring Algebraic IdentitiesQuadratic expressionsLevel 74Medium MathematicsHow is (3x^2-12) written by taking (3) outside?Class 9Exploring Algebraic IdentitiesQuadratic expressionsLevel 74Medium MathematicsWhich condition is essential for an expression in the standard form \(ax^2+bx+c\) to be quadratic?Class 9Exploring Algebraic IdentitiesQuadratic expressionsLevel 74Medium MathematicsSuppose \(a, b, c\) are constants. Which condition is necessary for \(ax^2+bx+c\) to be a quadratic expression in \(x\)?Class 9Exploring Algebraic IdentitiesQuadratic expressionsLevel 74Medium MathematicsIf a quadratic expression has coefficient 5 for x, coefficient -2 for x², and constant term 7, which is its standard form?Class 9Exploring Algebraic IdentitiesQuadratic expressionsLevel 74Medium MathematicsWhich of the following quadratic expressions can be written as the product of the sum and difference of two monomials?Class 9Exploring Algebraic IdentitiesQuadratic expressionsLevel 74Medium MathematicsWhat is the linear coefficient in (4x^2+0x-9)?Class 9Exploring Algebraic IdentitiesQuadratic expressionsLevel 74Medium MathematicsWhich of the following is a quadratic expression in the variable \(y\)?Class 9Exploring Algebraic IdentitiesQuadratic expressionsLevel 74Medium