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In (x^2+kx-20), if the coefficient of (x) is (-11), what is the value of (k+4)?

Answer and explanation

Correct answer: -7

The term containing x is kx, so the coefficient of x is k. Given that the coefficient of x is -11, we get k=-11. Therefore, k+4=-11+4=-7. Option -11 is the value of k only, not of k+4. Exam tip: To identify a coefficient, look at the number or variable multiplying the given variable in its term.

Related tags

Algebraic ExpressionsCoefficientsPolynomialsLinear TermSubstitutionIntroduction To PolynomialsMathematicsClass 9 Mcq

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