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If x + 2 x = 1, x (0, 2 ), then ( 12x + 12x) + 3( 10x + 10x + 8 x + 8 x) + ( 6 x + 6 x) is equal to:
(3) 2
x=1- 2x= 2x ⇒ x= x
Expression =2 12x+6 10x+6 8x+2 6x=2 6x( 2x+1)3
=2( 4x+ 2x)3=2( 2x+ x)3
=2(1)3=2
Answer: (3)
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