Question

A = {x: x satisfies x3 - 11x2 + 39x - 45 = 0}
B = {x: 5x - 6, 3x + 1, X - 1 are the lengths of the sides of a triangle), then n(A n B) is​

Answer 1

Answer:

Add up the lengths of the three side lengths to find the perimeter. Recall that the perimeter P = a + b + c. Now that you know the lengths of sides a, b and c, you simply need to add the lengths together to find the perimeter. In our first example,P = 3 + 4 + 5, or 12.

Answer 2

Answer:

Step-by-step explanation: