Question

p(x) =5xcube-1 then the value of p(1/2) +p(-2/3)​

Answer 1

Answer:

-617/216

Step-by-step explanation:

P(x) = 5x³ - 1

P(1/2) = 5 (1/2)³ - 1

= 5(1/ 8) - 1

= 5/8 - 1

= (5- 8)/8

= -3/8

P(-2/3) = 5 (-2/3)³ - 1

=5(-8/27) - 1

= -40/27 - 1

= (-40-27)/27

= -67/27

now,

P(1/2)+P(-2/3) = -3/8 - 67/27

$= \frac{ - 3}{8} - \frac{67}{27}$

$= \frac{ - 81 - 536}{216}$

$= \frac{ - 617}{216}$

Hooe this will help you.

Thank you.

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