What is the solution set?

Algebra
Tutor: None Selected Time limit: 1 Day

Solve 2x2 + 4x +10 = 0 using the Quadratic Formula.

A:  {–1 + 2i, –1 – 2i}

B;  {–2 + 4i, –2 – 4i}

C:  {–4 + 8i, –4 – 8i}

D:  {i, –3i}

Apr 6th, 2015

2x2+4x+10= 2(x22x+5) = 2 {(x+1}2+4}=0

(x+1)2 = -4

(x+1)2 = (2i)2

x+1= ±2i

x = -1±2i

Option A


Apr 6th, 2015

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