We know that,(x – 6)(x – 6) = (x – 6)2From formula, (a – b)2 = a2 + b2 – 2ab(x – 6)2 = x2 + 62 – 2 × x × 6= x2 – 12x + 36

Q6 of 95 Page 94

(x - 6)(x - 6) = ?

We know that,

(x – 6)(x – 6) = (x – 6)²

From formula, (a – b)² = a² + b² – 2ab

(x – 6)² = x² + 6² – 2 × x × 6

= x² – 12x + 36

(2x + 3)(3x - 1) = ?

(x + 4)(x + 4) = ?

(2x + 5)(2x - 5) = ?

8a²b³ ÷ (- 2ab) = ?