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Which polynomial is obtained by simplifying \\((3x+2)(x-4)\\)?

Answer and explanation

Correct answer: \(3x^2-10x-8\)

Using the distributive property, multiply every term in the first bracket by every term in the second: \((3x+2)(x-4)=3x\cdot x+3x\cdot(-4)+2\cdot x+2\cdot(-4)=3x^2-12x+2x-8=3x^2-10x-8\). Therefore, option A is correct. In option D, the sign of the constant term is incorrect. In an exam, carefully track the negative signs while expanding brackets.

Related tags

Binomial MultiplicationPolynomial ExpansionDistributive PropertyPolynomials In One VariablePolynomialsMathematicsClass 10 Mcq

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