Question

a-b=16 and a^2+b^2=400,the ab is

Answer 1

Answer:

ab = 72

Step-by-step explanation:

use the formula ( a - b )^2 = a^2 + b^2 - 2ab

( 16 )^2 = 400 - 2ab

256 = 400 - 2ab

256 - 400 = - 2ab

- 144 = - 2ab

- 144/ - 2 = ab

ab = 72

hope it helps

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