if p= -2 , find the value of. (i) - 2p³ - 3p² +4 p³ + 7
Answers
Answered by
6
Step-by-step explanation:
p=-2
-2p³-3p²+4p³+7
2p³-3p²+7
2(-2)³-3(-2)²+7
(2×-8)+(-3×4)+7
-16-12+7
-21
Answered by
1
Answer:
-21 answer
Step-by-step explanation:
-2p^3 -3p^2 + 4p^3 + 7
= 2×(-2)^3 - 3×(-2)^2 + 4×(-2)^3 + 7
= -2×(-8) -3× 4 + 4×(-8) + 7
= 16 - 12 - 32 + 7
= 23 - 44
= -21 Ans
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