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Vera_Pavlovna [14]
4 years ago
6

5x^2=45 what is x? ahh I need help.. anyone? 

Mathematics
2 answers:
Zina [86]4 years ago
5 0
5x²=45

x²=45/5=9

x²=9

Therefore, x=(-3) and x=3.
Tema [17]4 years ago
3 0
<span>5x^2 = 45</span>

Divide each side by 5 :

x^2 = 9

Take the square root of each side:

 x = +3  or  -3 .

Did I go too fast for you ?
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Enter an expression equivalent to (3x^2+2y^2-3x) + (2x^2+y^2-2x) - (x^2 + 3y^2 +x)
11111nata11111 [884]

Answer:

4x² - 6x

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> </u>

Distributive Property

<u>Algebra I</u>

  • Terms/Coefficients

Step-by-step explanation:

<u>Step 1: Define</u>

(3x² + 2y² - 3x) + (2x² + y² - 2x) - (x² + 3y² + x)

<u>Step 2: Simplify</u>

  1. [Distributive Property] Distribute negative:                                                    3x² + 2y² - 3x + 2x² + y² - 2x - x² - 3y² - x
  2. Combine like terms (x²):                                                                                   4x² + 2y² - 3x + y² - 2x - 3y² - x
  3. Combine like terms (y²):                                                                                   4x² - 3x - 2x - x
  4. Combine like terms (x):                                                                                    4x² - 6x
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Snowcat [4.5K]

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Step-by-step explanation:

x = 0.2525..... (1)

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(2) - (1) gives

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