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Simora [160]
3 years ago
14

Which expression is equivalent to

Mathematics
1 answer:
Shtirlitz [24]3 years ago
3 0

Answer:

\frac{(x+2)}{(x-1)}

Step-by-step explanation:

\frac{x^2 + x -2}{x^2 -2x+1} =

\frac{(x+2)(x-1)}{(x-2)(x-1)} =

\frac{(x+2)}{(x-1)}

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Square root of 100/121
klasskru [66]
Ah... good ol' square roots...

Whenever you take the square root of multiplication or division, you can do the square roots separately. So, we can write:

\sqrt{\frac{100}{121}} = \frac{\sqrt{100}}{\sqrt{121}}

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7 0
4 years ago
Please help 50 points wrong answers will be reported
AURORKA [14]

Answer:

A. y=2\sqrt{x+4}+5 is a translation of the parent function y=2\sqrt{x} 4 units left and 5 units up

Step-by-step explanation:

Consider expression \sqrt{4x+16}:

\sqrt{4x+16}=\sqrt{4\cdot (x+4)}=\sqrt{4}\cdot \sqrt{x+4}=2\sqrt{x+4}

Hence, the function is

y=2\sqrt{x+4}+5

Consider the parent function y=2\sqrt{x}

The main translations:

  • y=2\sqrt{x-a} - a units to the right;
  • y=2\sqrt{x+a} - a units to the left;
  • y=2\sqrt{x}+b - b units up;
  • y=2\sqrt{x}-b - b units down.

Hence, y=2\sqrt{x+4}+5 is a translation of the parent function y=2\sqrt{x} 4 units left and 5 units up

6 0
3 years ago
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