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Step2247 [10]
4 years ago
5

Choose the product. (3x 2 + 2x - 3)(x - 1)

Mathematics
1 answer:
Andrews [41]4 years ago
6 0
(3x² + 2x - 3) (x-1),

The product of the above factors is: 3x³ - x² - 5x + 3

Distributive property of multiplication

x(3x² + 2x - 3) - 1(3x² + 2x - 3) 
3x³ + 2x² - 3x - 3x² - 2x + 3

Group like terms:
3x³ + 2x² - 3x² - 3x - 2x + 3
3x³ - x² - 5x + 3

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Which of the following is a rational number?
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Answer:

B

Step-by-step explanation:

when you solve B you get 15 and for all the other ones you get a non-terminating decimal

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3 years ago
3(x-4) + 2x - y2 for x = 5
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Answer:

there is some of it sorry cant realy help

Step-by-step explanation:

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Dane says that the answer to the problem 4 to the 6th power times 4 to the 3th power is 16 to the 9th power. What was his mistak
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Step-by-step explanation:

his mistake was that he didnt follow the rules of the order of operations and he multiplied 4 by 4 and just added the third power and the 6th power getting the wrong answer

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3 years ago
F(x)= -5x-1 and g(x)= 2x^2<br>solve (f+g)(x)
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f(x)=-5x-1;\ D_f:x\in\mathbb{R}\\\\g(x)=2x^2;\ D_g:x\in\mathbb{R}\\\\D_f=D_g\ then\ (f+g)(x)=f(x)+g(x)\\\\(f+g)(x)=-5x-1+2x^2=2x^2-5x-1

8 0
3 years ago
Read 2 more answers
If 1/a, 1/b, 1/c are in Arithmetic Progress, show that 2ac/a+c.​
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  1. 1/b-1/a = 1/c-1/b [ since they are in arithmetic progress]
  2. 1/b+1/b = 1/c+1/a
  3. 2/b = (a+c)/ac
  4. 2ac = b(a+c)
  5. 2ac/(a+c) =b

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3 years ago
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