Question

evaluate the following Java expression j=16; z=(4*j++)/3;​

Answer 1

Answer:

Evaluate the following Java expression, if x=3, y=5, and z=10:

++z + y - y + z + x++

a) 24

b) 23

c) 20

d) 25

→ 24

Answer 2

Answer:

Factors of a2-1=(a + 1)(a-1)

Factors of a3-1=(a-1)(a2 + a + 1) … (from properties)

Factors of a2 + a-2

=(a2 + a-2)

=(a2 + 2a-a-2)

=[{a(a + 2)-1(a + 2)}]

=[{(a + 2)(a-1)}]

=(a + 2)×(a-1)

GCD is the greatest common divisor, which is equal to the product of all the common divisors.

∴the GCD of a2-1, a3-1, a2 + a-2 is (a-1)