Mathematics: Which of the following is a solution of x2 + 2x + 4? a) −2 + two i times the square root of 3 b) 2 + two i times the square root of 3 c) 1 − i times the square root of 3 d) −1 + i times the square root of 3

Which of the following is a solution of x2 + 2x

nathanbarbry

10.03.2022

The correct option is D) −1 + i times the square root of 3.

Step-by-step explanation:

We are given the following expression and we are to find the solutions for this quadratic expression:

x^2 + 2x + 4

Since we cannot factorize this so we will use the quadratic formula $x = \frac{-b+-\sqrt{b^2-4ac} }{2a}$ to solve it:

$\frac{-(2) + -\sqrt{(2)^2-4(1)(4)} }{2 (1) }$

$-1 + \sqrt {3i} , -1 - \sqrt {3i}$

Therefore, from the given answer options the correct option is D) −1 + i times the square root of 3.

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janeou17xn

11.03.2021

the answer is the question B!!

Step-by-step explanation:

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