Asked by Alexsander

Let U={x: x is an integer and 2≤x≤10}. In each of the following cases, find A,B and determine whether A⊆B,B⊆A, both or neither:
A={x: 2x+1>7},B={x: x^2>20}.
A={x:x^2-3x+2=0},B={x:x+7 is a perfect square}.
Answered by oobleck
A = {3,4,5,6,7,8,9,10}
B = {5,6,7,8,9,10}
sure looks like A⊆B

what do you get for the other one?
Answered by jon
Let U={x: x is an integer and 2≤x≤10}. In each of the following cases, find A,B and determine whether A⊆B,B⊆A, both or neither:
A={x: 2x+1>7},B={x: x^2>20}.
A={x:x^2-3x+2=0},B={x:x+7 is a perfect square}.
Answered by rameztawfek
Let U={x: x is an integer and 2≤x≤10}. In each of the following cases, find A,B and determine whether A⊆B,B⊆A, both or neither:
A={x: 2x+1>7},B={x: x^2>20}.
A={x:x^2-3x+2=0},B={x:x+7 is a perfect square}.
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