Factorise using suitable identity for 9x^2-12x+4
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Answered by
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Step-by-step explanation:
9x^2 -12x +4 =0
(3x )^2 -2×3x × 2+2^2 = 0
this is (a-b)^2 = a ^2 -2ab+ b ^2
(3x -2) ^2 =( 3x -2)(3x -2) is the answer
Answered by
4
=>9x²-12x+4
=>9x²-6x-6x+4
=>3x(3x-2)-2(3x-2)
=>(3x-2)(3x-2)
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