3x^2 - 8x + 4 = 0 How do I use the box method/ factor by grouping

Which of these people has balanced their checkbook correctly? oa. gary: the balance in his check register is $500 and the balance in his bank statement is $500. b. gail: the balance in her check register is $400 and the balance in her bank statement is $500. c. gavin: the balance in his check register is $500 and the balance in his bank statement is $510.

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Find the domain and range of the following function f(x) = 51x - 21+ 4