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Artyom0805 [142]
2 years ago
10

2 x -1^2 + 1 please show me how to get to the answer of 1

Mathematics
2 answers:
OLga [1]2 years ago
7 0

Answer:

-1

Step-by-step explanation:

2 × (-1²) + 1 = 2 × (-1) + 1 = -2 + 1 = -1

alex41 [277]2 years ago
3 0

Answer:

The answer is -1.

Step-by-step explanation:

2\left(-1^2\right)+1\\-1^2\\=-1\\=2\left(-1\right)+1\\2\left(-1\right)\\2\left(-1\right)=-2\cdot \:1=-2\\=-2\\=-2+1\\-2+1\\=-1

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What equation is equivalent to 1.43p + 2.2 = -4.001
elena55 [62]
For this case we have the following equation:
 1.43p + 2.2 = -4.001

 We can rewrite the equation.
 For this, we subtract 2.2 on both sides of the equation.
 We have then:
 1.43p + 2.2 - 2.2 = -4.001 - 2.2

 Rewriting the equation on both sides we have:
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 Answer:
 
An equation that is equivalent is:
 
1.43p = -6.201
4 0
3 years ago
Need help with a system of equations
sweet [91]

Answer:

\boxed{x - y = -2\sqrt{7}}

Given:

x + y = 4 \\  \\  {x}^{2}  +  {y}^{2}  = 22 \\  \\  {x}^{4}  =  {y}^{4}  - 176 \sqrt{7}

Step-by-step explanation:

=  >  {x}^{4}  =  {y}^{4}  - 176 \sqrt{7}  \\  \\  =  >  {x}^{4}  -  {y}^{4}  =  - 176 \sqrt{7}  \\  \\  =  >  {( {x}^{2}) }^{2}  -  { ({y}^{2}) }^{2}  =  - 176 \sqrt{7}  \\  \\  =  > ( {x}^{2}  +  {y}^{2} )( {x}^{2}  -  {y}^{2} ) =  - 176 \sqrt{7}  \\  \\  =  > ( {x}^{2} +  {y}^{2})  (x + y)(x - y) =  - 176 \sqrt{?}  \\  \\  =  > 22 \times 4(x - y) =  - 176 \sqrt{7}  \\  \\  =  > 88(x - y) =  - 176 \sqrt{7}  \\  \\ =  >  x - y =  -  \frac{176 \sqrt{7} }{88}  \\  \\  =  > x - y =  - 2 \sqrt{7}

Identity used:

{x}^{2}  -  {y}^{2} = (x + y)(x - y)

7 0
4 years ago
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Answer:

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Step-by-step explanation:

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3 years ago
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Let's call the missing side ? as shown in the problem.

Now set up a equation where everything adds up to 28x+11

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Find the length of AB, given that be is a median of the triangle and AC = 30.
RSB [31]

SOLUTION

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