Question

Complete the sum using completing square method​

Answer 1

Hey mate!!!

Here is ur answer...

9x²-12x+4=0

By completing square method

x²-4x/3+4/9=0

=>(x-2/3)²=0. ----------- by a²+2ab + b² = (a+b)²

Taking under root on both sides of

x-2/3=0

=> x=2/3


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Answer 2

9x²-12x+4

=9x²-6x-6x+4 {mid-term factor}

=3x(3x-2)-2(3x-2)

=(3x-2) (3x-2)

=(3x-2)²

Then,

3x-2=0

3x=2

x=2/3