Jawab:
(a.)  Hp = {4, -2}
(b.)  Hp = {-³/₂, -2}

Penjelasan :
(a.)  x² - 2x   - 8 = 0
-> Ax² + Bx + C = 0
A = 1, B = -2, C = -8
p dan q akar-akar persamaan
p+q = -B/A,   pq = C/A
p+q = -(-2/1), pq = -8/1
p+q = 2         pq = -8
4 - 2 = 2        4(-2) = -8
p = 4, q = -2
Hp = {p, q}
Hp = {4, -2}
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2x² + 7x + 6 = 8 mungkin
maksudnya 2x² + 7x + 6 = 0
karena 2x² + 7x + 6 = 8 hanya
dapat dicari lewat kuadrat
sempurna dan rumus abc saja
(b.) 2x² + 7x + 6 = 0
(2÷2)x² + ⁷/₂ x + ⁶/₂ = 0
->   x² + ⁷/₂ x + ⁶/₂ = 0
->   x² + ⁷/₂ x + ⁶⁽²⁾/₂₍₂₎ = 0
->   x² + ⁷/₂ x + ¹²/₄ = 0
-> Ax² + Bx + C = 0
A = 1, B = ⁷/₂, C = ¹²/₄
p dan q akar-akar persamaan
p+q = -B/A,         pq = C/A
p+q = -(⁷/₂)/1,       pq = (¹²/₄)/1
p+q = -⁷/₂,           pq = ¹²/₄
-³/₂+(-⁴/₂) = -⁷/₂    -³/₂(-⁴/₂) = ¹²/₄
p = -³/₂, q = -⁴/₂
p = -³/₂, q = -2
Hp = {p, q}
Hp = {-³/₂, -2}

(xcvi)