Question

(4) Simplify: (5+V3) (7-V5)​

Answer 1

$( 5 + \sqrt{3} )( 7 - \sqrt{3} ) \\ > 5(7 - \sqrt{3} ) \sqrt{3} (7 - \sqrt{3} ) \\ > 45 - 5 \sqrt{3} + 7 \sqrt{3} - 3 \\ > 42 + 2 \sqrt{3 }$

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Answer 2

Answer:

V= 7/5 OR V=-5/3

Step-by-step explanation:

=(5+3V) (7-5V) (multiple this bracket so we will get following equation)

=35-25V+21V-35 (multiple the whole equation with - sign)

=15V^2 +4V-35

(factors for this is 25&21)

=(5V-7) (3V+5)