The answer is 2.2. that means it's c.
Hope this helped☺☺
Answer:
c
Step-by-step explanation:
Answer: x = { 2 ; 3 }
+) x² - 3 = x² - 1 - 2 = (x - 1)(x + 1) - 2
+) x² - 3 is divisible by x-1 but (x -1)(x + 1) is divisible by x-1
=> 2 must be divisible by x-1
=> x - 1 is divisor of 2
=> (x - 1) ∈ {-1; 1; 2; - 2;}
but x > 1 => x - 1 > 0
⇒ x - 1 = {1; 2; }
+) with x - 1 = 1 => x = 2
x - 1 = 2 => x = 3
Step-by-step explanation:
Answer:
7
Step-by-step explanation:
If you plug in the variable for x and y you get:
5+3-1
Use the order of operations to solve:
5+3-1
8-1
7
