Question

If a^2- b^2 = 36 and a +b = 4, then (a - b) = ____
(A) 36
(B) 9
(C) 81
(D) 44​

Answer 1

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${a}^{2} - {b}^{2} = 36 \\ a + b = 4 \\ (a + b)(a - b) = 36 \\ 4 \times (a - b) = 36 \\ a - b = 9$

Answer 2

Answer:

The answer is (

$9$

B)