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If 4(–3x – 8) = 8(–x + 9), what is the value of x2?
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23 Jun 2018, 11:38
23 Jun 2018, 11:38
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Expert Reply
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Question Stats:
90% (00:59) correct
9% (00:41) wrong based on 51 sessions
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Re: If 4(–3x – 8) = 8(–x + 9), what is the value of x2?
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01 Jul 2018, 21:54
01 Jul 2018, 21:54
1
sandy wrote:
Here;
\(4(-3x - 8) = 8(-x + 9)\)
or \((-3x - 8) = 2(-x + 9)\)
or \(-3x -8 = -2x + 18\)
or \(x = -26\)
or \(x^2 = (-26)^2\) = 676
Re: If 4(–3x – 8) = 8(–x + 9), what is the value of x2?
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15 Jul 2018, 03:44
15 Jul 2018, 03:44
Expert Reply
Explanation
Distribute, group like terms, and solve for x:
4(–3x – 8) = 8(–x + 9)
–12x – 32 = –8x + 72
–32 = 4x + 72
–104 = 4x
–26 = x
Then, multiply 26 by 26 in the calculator (or –26 by –26, although the negatives will cancel each other out) to get \(x^2\), which is 676.
Distribute, group like terms, and solve for x:
4(–3x – 8) = 8(–x + 9)
–12x – 32 = –8x + 72
–32 = 4x + 72
–104 = 4x
–26 = x
Then, multiply 26 by 26 in the calculator (or –26 by –26, although the negatives will cancel each other out) to get \(x^2\), which is 676.
