find the product( 5+√7) (5-√7)
Answers
Answered by
0
Answer:18
Step-by-step explanation:
=5^2-(√7)^2
=25-7
=18
Answered by
6
HOLA MATE...!!!
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(5+√7)(5-√7)
Using the identity
(a+b)(a-b)=a²-b²
a=5
b=√7
(5²)-(√7²)
=25-7
Answer=18✔️
OR
(5+√7)×(5-√7)
it can also be solved like this :-
5(5-√7)+√7(5-√7)
=25-5√7+5√7-7
=25-7
Answer=18✔️
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