Question

5. What is the value of
(13+15)x(13-v5) ? *
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Answer 1

Answer:

Step-by-step explanation:

( √13 + √5 ) ( √13 - √5 )

as we can do like this

( a + b) ( a - b) ^2

( √13 )^2 - (√5)^2.

13 - 5

= 8

hence answer is 8