Question

1. Use the formula to multiply the following.
(i) (x + y) (x - y)
(iii) (a + 6) (a - 6)​

Answer 1

(X+y)(x-y) = x^2-y^2

(a+6)(a-6) = a^2 - 6^2 = a^2-36

Answer 2

Answer:

i) i. Here, a = x, b = y (x + y)(x – y) = x2 – y2 …. [(a + b)(a – b) = a2 – b2 ]

ii) Here, A = a, B = 6 (a + 6) (a – 6) = a2 – 62 …. [(A + B)(A – B) = A2 – B2 ] = a2 – 36

Explanation:

hope it helps you