Question

# The roots of the equation 32x−10.3x+9=0 are1,2 0,2 0,1 1,3

Solution

## The correct option is B 0,2 Given equation is 32x−10.3x+9=0 can be written as Let a = 3x, then it reduces to the equation a2−10a+9=0 ⇒ (a - 9)(a - 1) = 0 ⇒ a = 9, 1 Now a = 3x ⇒ 9 = 3x ⇒ 32 = 3x ⇒ x = 2 and 1 = 3x ⇒ 30 = 3x ⇒ x = 0 Hence roots are 0, 2

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