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jeka94
3 years ago
13

2x^2-50=x^2-1 solve by factoring step by step please

Mathematics
1 answer:
AnnZ [28]3 years ago
7 0

Answer:

x = -7, 7

Step-by-step explanation:

  • 2x²-50 = x² -1
  • 2x²-x²-50+1 = 0
  • x²-49 = 0
  • (x+7)(x-7)
  • x = -7, 7
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Step-by-step explanation:

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3 years ago
For the dinner special at a restaurant, the customer must choose an appetizer, a salad, an entree, a side dish, and a dessert. H
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The number of possible dinner specials are 4368.

Step-by-step explanation:

The number of dinner specials = 5

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They are 1. Appetizer Chicken strips, 2. Shrimp cocktail, 3. Buffalo wings, 4. Potato skins, 5. Salad Garden, 6. Caesar Entree T-bone steak, 7. Pot roast, 8. Lamb Side dish Corn, 9. Rice, 10. French fries, 11. Baked potato, 12. Pinto beans, 13. Dessert Chocolate cake, 14. Brownies, 15. Ice cream, 16. Apple pie

This is a combination problem requiring a combination solution with the following formula and steps:

C (n, r) =? C (n, r) = ?

n choose r

n (objects) =  16

r (sample) =  5

C (n, r) =? C (n, r) = ?

C (n, r) =C (14,5) C (n, r) =C (16,5)

=16! (5! (16−5)!) =16! (5! (16−5)!)

= 4368

3 0
3 years ago
Is -38/9 rational or irrational
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Step-by-step explanation:

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