Question

if p(x)=3x³-2x²+6x-5 find p(2)

Answer 1

Given: p(x) = 3x² - 2x² + 6x - 5 at x = 2

➟ p(2) = 3(2)² - 2(2)² + 6(2) - 5

➟ 3(8) - 2(4) + 12 - 5

➟ 24 - 8 + 12 - 5

➟ 16 + 12 - 5

➟ 28 - 5

➟ 23

Answer 2

The value of p(2) = 23.

Given: p(x)= 3x³- 2x² + 6x - 5

To Find: The value of p(2)

Solution:

• The question given is a 3-degree polynomial function.
• A function is a relation between a set of inputs having one output each.

Coming to the numerical, we need to find p(2), so x = 2.

The value of the function can be found by substituting x = 2 in all the places where 'x' is present in the polynomial.

∴ p(2) = 3 × (2)³ - 2 × (2)² + 6 × 2 - 5

          = 24 - 8 + 12 - 5

          = 23

Hence, the value of p(2) = 23.

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