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3 years ago

Whats the square root of 42

Mathematics

2 answers:

katovenus [111]3 years ago

6 0

Answer:

6.48....

Step-by-step explanation:

Natasha2012 [34]3 years ago

6 0

Answer:

6.5 but technically its 6.48 I just rounded

Step-by-step explanation:

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Answer: $x=\frac{3}{5}+i\frac{4}{5},\:x=\frac{3}{5}-i\frac{4}{5}$

Step-by-step explanation:

$25x^2-30x+25=0$

$x_{1,\:2}=\frac{-\left(-30\right)\pm \sqrt{\left(-30\right)^2-4\cdot \:25\cdot \:25}}{2\cdot \:25}$

$\sqrt{\left(-30\right)^2-4\cdot \:25\cdot \:25}$

$=\sqrt{30^2-4\cdot \:25\cdot \:25}$

$=\sqrt{30^2-2500}$

$=i\sqrt{2500-30^2}$

$=40i$

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$x_1=\frac{-\left(-30\right)+40i}{2\cdot \:25},\:x_2=\frac{-\left(-30\right)-40i}{2\cdot \:25}$

$x=\frac{3}{5}+i\frac{4}{5},\:x=\frac{3}{5}-i\frac{4}{5}$

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Step-by-step explanation:

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3 years ago

Whats the square root of 42​

Whats the square root of 42