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Question
If `p(x) = 2x^2 - 5sqrt 3 x + 5` then `p(5 sqrt 3)`.
Sum
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Solution
`p(x) = 2x^2 - 5sqrt 3 x + 5`
∴ `p(5 sqrt 3) = 2 xx (5 sqrt 3)^2 - 5sqrt 3 xx 5sqrt 3 + 5`
= 2(25 × 3) − (25 × 3) + 5
= 2 × 75 − 75 + 5
= 150 − 75 + 5
= 80
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Chapter 3: Polynomials - Practice Set 3.5 [Page 53]
