3 years ago

Given 2x² = -8, x is ____

Mathematics

2 answers:

IrinaVladis [17]3 years ago

5 0

Answer:

2x² = -8

x² = -4

The answer is no real solutions (x ∉ R) because a perfect square cannot be negative.

scZoUnD [109]3 years ago

3 0

Answer:

No real solutions, but there are complex solutions

x=2i and x = -2i.

Step-by-step explanation:

2x² = - 8

x² = - 4

x = +/- √(-4)= +/-√[(-1)*4] = +/-[√4 *√(-1)] = +/- [2*i]

x=2i and x = -2i

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