3 years ago

Solve x2 + 2x + 6 = 0 using the quadratic formula.

Mathematics

1 answer:

Eduardwww [97]3 years ago

6 0

No solution for the quadratic equation because of the √-20

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Westkost [7]

Since

$3^2=9,\quad 4^2=16$

The square root of 11 is somewhere between 3 and 4. In order to round it to the nearest tenth, we have to try all numbers between 3 and 4 with one decimal digit, and see which is closest to 11 when squared. We have

$\begin{array}{c|c}n&n^2\\3&9\\3.1&9.61\\3.2&10.24\\3.3&10.89\\3.4&11.56\end{array}\right]$

So, the square root of 11 is somewhere between 3.3 and 3.4.

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4 years ago

Match each description when z = 9 + 3i.

VladimirAG [237]

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3 years ago

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3 years ago

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