Question

If p(x) = 3x3 - 2x2 +6x -5, p(2)
is equal to:​

Answer 1

Answer:

Step-by-step explanation:

P(x)=3x³-2x²+6x-5

So p(2)=3×2³-2×2²+6×2-5

=3×8-2×4+6×2-5

=24-8+12-5

=36-13=23.(answer)

Answer 2

Here we have been asked to find the value of the polynomial. For doing that we need to follow up the given steps :

1. Find g(x)
2. Substitute it in p(x)
3. Simplify

So following the above steps :

• g(x) is already given so no need to find out.

• Substitute :

╭☞ p(x) = 3x³ - 2x² + 6x - 5

╭☞ p(2) = 3(2)³ - 2(2)² + 6(2) - 5

• Simplify :

╭☞ p(2) = 3(2)³ - 2(2)² + 6(2) - 5

╭☞ p(2) = 3(8) - 2(4) + 6(2) - 5

╭☞ p(2) = 24 - 8 + 12 - 5

╭☞ p(2) = 16 + 7

╭☞ p(2) = 23

So the value of the polynomial is 23.

Then ;

p(x) = 3x³ - 2x² + 6x - 5 , p(2) = 23