9000022802 Level: AFind all x∈R for which the following expression is undefined. log(2x2+4x−6)[−3;1](−∞;−3)∪(1;∞)(−3;1)(−∞;−3]∪[1;∞)
9000023704 Level: AIdentify a true statement which concerns the following equation. x+20=4The solution is from the set B={x∈R:−6≤x≤−2}.The solution is from the set A={x∈R:−4<x≤−1}.The solution is from the set C={x∈R:−7≤x≤−5}.The solution is from the set D={x∈R:−3<x<0}.
9000022305 Level: AFind the domain of the following expression. −x2+16x−63[7;9](−∞;7)∪(9;∞)(−∞;−7]∪[9;∞)(7;9)[−7;9]
9000023705 Level: AIdentify a true statement which concerns the following equation. x+4=3The solution is a divisor of 20.The solution is a divisor of 6.The solution is a divisor of 12.The solution is a divisor of 18.
9000023706 Level: AIdentify a true statement which concerns the following equation. 2x+7=5The solution is a multiple of 3.The solution is a multiple of 2.The solution is a multiple of 4.The solution is a multiple of 5.
9000023707 Level: AIdentify a true statement which concerns the following equation. 3x−5=4The solution is a prime number.The solution is from the interval [−5;5].The solution is from the set A={x∈R:−4<x≤3}.The solution is a multiple of 4.
9000023708 Level: AIdentify a true statement which concerns the following equation. x+5=x−1The solution is an even number.The solution is from the interval [−2;2).The solution is from the set A={x∈R:−1≤x<3}.The solution is a divisor of 6.