3 years ago

If 2x − 4(x + 1) = −12, evaluate x2 − 1.

1 answer:

6 0

2x-4(x+1)=-13
1) we solve this equation:
2x-4(x+1)=-12
2x-4x-4=-12
-2x=-12+4
-2x=-8
x=-8/-2
x=4

2) we evalute x²-1
x²-1=4²-1=16-1=15

Answer: 15

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<h3>How to determine the number of adults?</h3>

Let the children be x and adult be y.

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x + y = 3000

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Make x the subject in x + y = 3000

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Read more about system of equations at:

brainly.com/question/14323743

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