How i solve the ncert class 9th solution of chapter number systems give me the solution of exercise 1.5 question number 2(1),(2) . Find the best solution of this question by giving the simplest method of this question .Simplify each of the following expressions: (i) (3+√3)(2+√2) ,(ii) (3+√3)(3-√3 )
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Simplify each of the following expressions: (i) (3+√3)(2+√2) ,(ii) (3+√3)(3-√3 ) Q.2 (1), (2)
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(i) (3+√3)(2+√2)
Solution:
(3+√3)(2+√2 )
Opening the brackets, we get, (3×2)+(3×√2)+(√3×2)+(√3×√2)
= 6+3√2+2√3+√6
(ii) (3+√3)(3-√3 )
Solution:
(3+√3)(3-√3 ) = 32-(√3)2 = 9-3
= 6