please do this .... the answer is 3-3x .I just want the step wise explanation..
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(3x - 1)² - (3x - 2) (3x + 1)
= 9x² + 1 - 6x - ( 9x² + 3x - 6x - 2 ) { Identity of (a - b)² }
= 9x² + 1 - 6x - 9x² - 3x + 6x + 2
= 1 + 2 - 3x
= 3 - 3x
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Step-by-step explanation:
3x*3x-1*-1-3x+2*3x+1
9x+1-3x+6x+1
15x+2-3x
12x+2
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