Answer:
8.3
Step-by-step explanation:
The discriminant is b² - 4ac, in this case equal to 16 + 84 = 100.
The nature of the solution is real and rational (if that's what you mean).
i hope this was helpful! :D
Answer:
Step-by-step explanation: equivalent means equal to, so that means these expressions are equal :)
9514 1404 393
Answer:
the correct choice is marked
Step-by-step explanation:
The elements are 1, 4, {4}, {9}. That is, any subset that includes 1 must include it without braces. Any subset that includes 9 must include it with braces.
{4, {9}, 1} is a subset of A
