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tatuchka [14]
3 years ago
15

What are the solutions of x^2 - 2x + 10 = 0? ​

Mathematics
1 answer:
dybincka [34]3 years ago
5 0

Answer:

C. x = 1 + 3i or x = 1 - 3i

General Formulas and Concepts:

<u>Pre-Algebra</u>

Order of Operations: BPEMDAS

  1. Brackets
  2. Parenthesis
  3. Exponents
  4. Multiplication
  5. Division
  6. Addition
  7. Subtraction
  • Left to Right

<u>Algebra I</u>

  • Standard Form: ax² + bx + c = 0
  • Quadratic Formula: x=\frac{-b\pm\sqrt{b^2-4ac} }{2a}

<u>Algebra II</u>

  • Imaginary Roots: √-1 = i

Step-by-step explanation:

<u>Step 1: Define</u>

x² - 2x + 10 = 0

<u>Step 2: Identify Variables</u>

a = 1

b = -2

c = 10

<u>Step 3: Find roots</u>

  1. Substitute [Quad Formula]:                    x=\frac{2\pm\sqrt{(-2)^2-4(1)(10)} }{2(1)}
  2. Exponents:                                              x=\frac{2\pm\sqrt{4-4(1)(10)} }{2(1)}
  3. Multiply:                                                   x=\frac{2\pm\sqrt{4-40} }{2}
  4. Subtract:                                                  x=\frac{2\pm\sqrt{-36} }{2}
  5. Factor:                                                     x=\frac{2\pm\sqrt{-1} \sqrt{36} }{2}
  6. Simplify:                                                   x=\frac{2\pm6i }{2}
  7. Factor:                                                     x=\frac{2(1\pm3i) }{2}
  8. Divide:                                                     x=1\pm3i
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Question 3
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Answer:

6. -2.5 + 3 = 0.5

Part B. -2.5 + x = y

4. a. Yes

   b. No

   c. No

   d. Yes

1. C. -1/8 points

3. a. -3.7 + 8 = positive number                  8 = a.           4/3 = d.                                                            

   b. -8 - 1/1/3 = negative number              -8 = b, c.         -5 = b, d.                                                                            

   c. -8 + 8 = 0                                          -4.9 = b, d.     -5.4 = b, d.                                                                                                            

   d. -4.52 + -4.9 = negative number       3.8 = a, d.    3.86 = a, d.                                                                                                

Step-by-step explanation:

Those are the correct answers.

5 0
4 years ago
Read 2 more answers
HELP PLZZ
valentina_108 [34]
Y = 11.5x + 22
y = -13x + 218

when will their balance be the same.....ur basically just subbing in 1 y for the other and u get :
11.5x + 22 = -13x + 218....now we solve for x
11.5x + 13x = 218 - 22
24.5x = 196
x = 196 / 24.5
x = 8 <== they will be the same at 8 weeks

11.5(8) + 22 = 114
-13(8) + 218 = 114
and they will both have $ 114 at 8 weeks <===
3 0
3 years ago
Read 2 more answers
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