The equation x²=K has two real solutions or roots if
a. K=0
b. K=√0
c. K>0
d. K<0
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The equation x²=K has two real solutions or roots if
a. K=0
b. K=√0
c. K>0
d. K<0
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Answer:
c. K>0
Step-by-step explanation:
Radical expressions will always result in 2 real solutions: a positive root, then a negative root (√4, for example, is either -2 or 2). But negative numbers don't have real roots.
Therefore, k must be greater than 0, or have a positive value, in order for it to have 2 real and distinct solutions.
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