Question

$( \sqrt{7 \: } + \sqrt{4} } } \: ) \: ( \sqrt{7} - \sqrt{4} } )$
solve the following
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Answer 1

Answer:

answer is 0... Mark me brainliest

Answer 2

SOLUTION :

THIS PROBLEM CAN BE SOLVED IN TWO METHODS

□METHOD - I :

$(7 + \sqrt{4} )(7 - \sqrt{4} ) \\ \\ it \: is \: in \: the \: form \: of \: \\ \\ (a + b)(a - b) = {a}^{2} - {b}^{2} \\ \\ so \: (7 + \sqrt{4} )(7 - \sqrt{4} ) = (7) {}^{2} - ( \sqrt{4} ) {}^{2} \\ \\ = 49 - 4 = 45$

☆FORMULA USED :

$i) \: (a + b)(a - b) = {a}^{2} - {b}^{2}$

□METHOD - II :

SINCE √4 = 2

$= (7 + 2)(7 - 2) \\ \\ = 9(5) = 45$