Roster form of {x:x^2=4 or x=3}
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Answered by
4
x^2 =4
x= +2 or -2
another condition is x=3
if x=3 then x^2=9 but not 4
so there is no value satisfying both the given conditions
so answer is null set or emptyset
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dora19:
why is this not an empty set?
according to qn x should be = 3 and x^2= 4, there are no numbers satisfying both
plz help
sorry for wrong answer.......now see u can understand
Answered by
4
Answer:
{2, -2,3}
Step-by-step explanation:
x^2=4
=>x=2, -2 ; x=3
why is this not a null set??
x^2= 4 and x= 2 ...there are no numbers satisfying both
plz help
after reading the above answer i think i maybe wrong . so i suggest you go with the above answer.
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