1.

If p(x) = 4x^2+7x-8, then the value of p(2) is __________(a) 20(b) 18(c) 22(d) 14This question was posed to me by my college director while I was bunking the class.My doubt is from Zeroes of Polynomial topic in chapter Polynomials of Mathematics – Class 9

Answer»

Right option is (c) 22

For explanation: If p(x) is any polynomial, then p(a) MEANS substituting x by a in a polynomial.

Therefore, p(2) means, putting 2 in PLACE of x in 4x^2+7x-8.

Hence, p(2) = 4(2)^2+7(2)-8 = 4(4) + 14 – 8

= 16 + 14 – 8

= 22.



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