Q1 of 186 Page 4

Solve the following system of equations by elimination method:

√2x – √3y = 0


√5x + √2y = 0

Given pair of linear equations is


√2 x – √3 y = 0 …(i)


And √5 x + √2 y = 0 …(ii)


On multiplying Eq. (i) by √2 and Eq. (ii) by √3 to make the coefficients of y equal, we get the equation as


2x – √6 y = 0 …(iii)


√15 x + √6 y = 0 …(iv)


On adding Eq. (iii) and (iv), we get


2x – √6 y + √15 x + √6 y = 0


2x + √15 x = 0


x(2 + √15) = 0


x = 0


On putting x = 0 in Eq. (i), we get


√2 x – √3 y = 0


√2(0) – √3 y = 0


– √3 y = 0


y = 0


Hence, x = 0 and y = 0 , which is the required solution.


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