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USPshnik [31]
3 years ago
7

Solve for x. 2x^2+12x+11-(x+4)^2

Mathematics
1 answer:
Andru [333]3 years ago
5 0
2x² + 12x + 11 - (x - 4)²
2x² + 12x + 11 - 1(x - 4)²
2x² + 12x + 11 - 1(x - 4)(x - 4)
2x² + 12x + 11 - 1(x(x - 4) - 4(x - 4))
2x² + 12x + 11 - 1(x(x) - x(4) - 4(x) + 4(4))
2x² + 12x + 11 - 1(x² - 4x - 4x + 16)
2x² + 12x + 11 - 1(x² - 8x + 16)
2x² + 12x + 11 + 1(x²) + 1(8x) - 1(16)
2x² + 12x + 11 + x² + 8x - 16
2x² + x² + 12x + 8x + 11 - 16
3x² + 20x - 5
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Ian owns a small business selling used books. He knows that in the last week 19
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Step-by-step explanation:

last week there were 19+30+77 = 126 customers.

19/126 = 1/14 paid cash.

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1800/126 = 300/21 = 100/7

now we actually only need to apply the same factor to any part of the total sum to get their share in the new total sum.

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2 years ago
When a bush was first planted in a garden it was 12 inches tall after two weeks it was 120% as tall when it was first planted ho
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A water well rig has dug to a height of -60 feet after one full day of continuous use. if the rig has been running and is curren
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Given :

A water well rig has dug to a height , H = 60 feet after one full day of continuous use .

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If the height is currently 143.6 feet how time it been running .

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Therefore , time taken is 57.44 hours .

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