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4t to the second power -1

4t2-1

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Shelly J. | Excellent Maths Tutoring for academic successExcellent Maths Tutoring for academic su...
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Hi Ej,
 
4t²-1=(2t)²-(1)²                 (a)²-(b)²=(a-b)(a+b)
 
       =(2t-1)(2t+1)