X square + 1/2 x square if x= 5+√2 what\'s is the answer

1.	X square + 1/2 x square if x= 5+√2 what\'s is the answer
Answer» Ans .x square (1 +1/2) = x square (3/2) = xsquare 3/2 = (5 + √2)^2 × 3/2 =( 5^2 + √2^2 + 2×5×√2) ×3/2 (a+b)^2= a^2+b^2+2ab = (25 +2 + 10√2) × 3/2 = (27 + 10√2) × 3/2 = ( 27 + 10× 1.414) ×1.5 (√2=1.414) = (27 +14.14) ×1.5 =(41.14)× 1.5 = 61.71

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