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alekssr [168]
3 years ago
13

Solve -4(3x – 7) = 52 for x. a. x = 2 b. x = -2 c. x = -4 d. x = 4

Mathematics
1 answer:
Darya [45]3 years ago
5 0

Answer: x = -2

Step-by-step explanation:---------------

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goblinko [34]

Answer:

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Step-by-step explanation:

\begin{array}{c||c|c|c|c}&x^3&x^2&x&1\\---&---&---&---&---\\&1&-a&b&c\\x=-1&&-1&a+1&-a-b-1\\---&---&---&---&---\\&1&-a-1&a+b+1&c-a-b-1\\\end{array}

\begin{array}{c||c|c|c|c}&x^3&x^2&x&1\\---&---&---&---&---\\&1&-a&b&c\\x=2&&2&4-2a&2b+8-4a\\---&---&---&---&---\\&1&2-a&b+4-2a&c+2b+8-4a\\\end{array}

Thus:

c+2b+8-4a=c-a-b-1

3b-3a=-9

<u>a=b+3</u>

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