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Juli2301 [7.4K]
3 years ago
6

Solve for x in the equation I need help ASAP​

Mathematics
2 answers:
natita [175]3 years ago
7 0

Answer:

D

Step-by-step explanation:

Given

2x² + 3x - 7 = x² + 5x + 39

Subtract x² + 5x + 39 from both sides

x² - 2x - 46 = 0 ← in standard form

with a = 1, b = - 2, c = - 46

Solve for x using the quadratic formula

x = (- (- 2) ±\sqrt{(-2)^2-(4(1)(-46)} ) / 2

  = ( 2 ± \sqrt{4+184} ) / 2

  = ( 2 ± \sqrt{188} ) / 2

  = ( 2 ± 2\sqrt{47} ) / 2

  = 1 ± \sqrt{47}

DedPeter [7]3 years ago
4 0
The answer is D

You just move all numbers to the left and set it equal to 0
And then you add all same variables together
After that you use the quadratic formula
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Find BC if AC = 13 and AB = 10
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Step-by-step explanation:

<em>We </em><em>can </em><em>solve </em><em>this </em><em>by </em><em>eliminating</em><em> </em><em>given </em><em>detail </em><em>of </em><em>A.</em>

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7 0
3 years ago
What's the average of 19 from 45
Naya [18.7K]
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