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What is the value of (4 + a)(4 – b) when a = 4 and b = –4 ?
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19 Jun 2017, 11:57
19 Jun 2017, 11:57
Expert Reply
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Question Stats:
86% (00:23) correct
13% (00:14) wrong based on 120 sessions
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What is the value of (4 + a)(4 – b) when a = 4 and b = –4 ?
A) –64
B) –16
C) 0
D) 16
E) 64
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Re: What is the value of (4 + a)(4 – b) when a = 4 and b = –4 ?
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20 Jun 2017, 08:21
20 Jun 2017, 08:21
1
Carcass wrote:
What is the value of (4 + a)(4 – b) when a = 4 and b = –4 ?
A) –64
B) –16
C) 0
D) 16
E) 64
Take (4 + a)(4 – b) and replace a with 4, and replace b with -4
We get: (4 + a)(4 – b) = (4 + 4)(4 – -4)
= (8)(8)
= 64
Answer:
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Re: What is the value of (4 + a)(4 – b) when a = 4 and b = –4 ? [#permalink]
20 Jun 2017, 08:21
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