Question

p(x)= x³+3x² -2x +4 find p(2)-p(-1)+p(½)​

Answer 1

Answer:

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Step-by-step explanation:

p(x)= x³+3x² -2x +4

i) p(2)= 2³+3(2)² -2(2) +4

= 8 + 3(4) - 4 + 4

= 8+12

= 28

ii) p(-1)= -1³+3(-1)² -2(+1)+4

= -1 + 3(1) -2 + 4

= -1 + 3 -2 +4

= 4

iii) p(½)= (½)³+3(½)² -2(½) +4

= ⅛+ 3(¼) - 2(½) + 4

= ⅛.+ ¾ - 1 + 4

= ⅞-3