Solve the ques simplify the following:(root7-root6)(3root7-2root6
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Answer:
27 - 3 √42
Step-by-step explanation:
(√7 - √6 ) ( 3 √7 - 2 √ 6 )
= √7 ( 3 √7 - 2 √ 6 ) - (√6 (√7 - √6 )
= 3 x 7 - 2 x √42 - √42 + 6
= 21 - 2√42 - √42 + 6
= 27 - 3 √42
note : √7 x √7 = 7
√6 x √6 = 6
√7 x √6 = √7x6 = √42
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