Question

please answer this question​

Answer 1

Answer:

i)p=-1

9p³+8p²-2p+1

9(-1)³+8(-1)²-2(-1)+1

9(-1)+8(1)-(-2)+1

-9+8+2+1

-9+11

=2

ii)x=-2

8x²-6x³-6

-6x³+8x²-6

-6(-2)³+8(-2)²-6

-6(-8)+8(4)-6

48+32-6

80-6

=74

Step-by-step explanation:

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Answer 2

$i) \: {9p}^{3} + {8p}^{2} - 2p + 1 \\ = {9( - 1)}^{3} + {8( - 1)}^{2} - 2 (- 1) + 1 \\ = - 9 + 8 + 2 + 1 \\ = 2$

$ii) \: {8x}^{2} - {6x}^{3} - 6 \\ = {8( - 2)}^{2} - {6( - 2)}^{3} - 6 \\ = 32 + 48 - 6 \\ = 74$