If p = -2, find the value of:
(1) 4p + 7
(ii) -3p² + 4p +7
(iii) -2p³ - 3p² + 4p + 7
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Answered by
1
(i) 4(-2) +7
= (-8) + 7
= -1
(ii) -3(-2)²+ 4(-2) + 7
= -3(4) + 4(-2) + 7
= -12 - 8 + 7
= -20 + 7
= -13
(iii) -2(-2)³ - 3(-2)² + 4(-2) + 7
= -2(-8) - 3 (4) + 4(-2) + 7
= 16 - 12 - 8 + 7
= 3
Answered by
3
Answer:
(1) -1
(2) -13
(3) 3
Step-by-step explanation:
p = -2
(1) 4p + 7
= 4(-2) + 7
= -8 + 7
= -1
(2) -3p² + 4p +7
= -3(-2)² + 4(-2) + 7
= -3(4) + (-8) + 7
= -12 - 8 + 7
= -20 + 7
= -13
(3) -2p³ - 3p² + 4p + 7
= -2(-2)³ - 3(-2)² + 4(-2) + 7
= -2(-8) - 3(4) + (-8) + 7
= 16 - 12 -1
= 3
Hope it helps, buddy!!
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