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Class 9MathematicsExploring Algebraic IdentitiesQuadratic expressionsMedium
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Which pair correctly splits the middle term in (3x^2-8x+4)?

Answer and explanation

Correct answer: (-6x) and (-2x)

(-6x-2x=-8x), and ((-6)(-2)=12), which equals (3\cdot4). Exam tip: the product of the two numbers must be (ac).

Related tags

Middle Term SplittingAc MethodQuadratic ExpressionQuadratic ExpressionsExploring Algebraic IdentitiesMathematicsClass 9 Mcq
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  2. 2What will be the factorised form of (r^2-2rs+s^2)?
  3. 3Which expression can be factorised directly using the identity for the difference of two squares?
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  5. 5Which expression is a quadratic expression?
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  8. 8If a quadratic expression has the general form \(ax^2+bx+c\), which condition on \(a\) is necessary for it to be quadratic?
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  10. 10Which of the following quadratic expressions can be factorised using the identity for the difference of two squares?
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