simplify (root 11+root 7)(root 11-root 7)
Answers
Answered by
12
Answer:
4
Step-by-step explanation:
To solve this
We have an identity :-
(a + b)(a - b) = a² - b²
a and b are two variables who's values are provided to you or you have to assume two numbers as a and b respectively
=> Let,
- a = √11
- b = √7
Therefore,
(√11 + √7)(√11 - √7) must be equal to
= (√11)² - (√7)²
according to the identity
= 11 - 7
= 4
ANSWER :-
4
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