Question

Which of the following is not a rational number?

What are all possible integer solutions for b & p in the equation?

Answer 1

4

Explanation:

7+sqrt(7) is an irrational number

Answer 2

p = 8 when b = 16 and p = -8 when

b = -16

Explanation:

x² + bx + 64 = x² + 2px + p²

Cancel x² on both sides,

bx + 64 = 2px + p²

Now, by comparing both sides, you'll get the following equations,

1. b = 2p

2. p² = 64

From equation (2),

p = ±√64

= 8 or -8

Substitute p = 8 and p = -8 into equation (1),

b = 2(8) and b = 2(-8)

b = 2(8) and b = 2(-8) = 16 = -16

Therefore, p = 8 when b = 16 and p = -8 when

b = -16