Question

3x cube - 2 X square + 6 x -5 find p (2)

Answer 1

Solution:

Let p(x) = 3x³-2x²+6x-5

Substitute x = 2 in p(x).

p(2) = 3(2³)-2(2)²+6(2)-5

= 3×8-2×4+12-5

= 24 - 8 +12 - 5

= 24 +12 -8-5

= 36 - 13

= 23

Therefore,

p(2) = 23

••••

Answer 2

So p(x) =23 (Substitute 2 in place of x)