Use the discriminant to determine the nature of the roots of the following equation. x2 + 2x + 5 = 0
imaginary root
Double root
real and rational root
real and irrational root

Step-by-step explanation:

disc.=b²-4ac=2²-4×1×5=4-20=-16<0

it has imaginary roots.

according to the triangle sum theorem, all the angles in a triangle must add up to 180 degrees. if we know one angle is already 90, we do 180-90=90. the other 2 angles must add up to 90, exactly.

step-by-step explanation:

image for option 4

step-by-step explanation:

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