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n + 7n - 2 = 8n -2 = 2 (4n -1)
Any number of solutions exist, depending on what this expression is set to.
(7x + 7)(x + 2) = 7x2 + 21x + 14
7*2+5=19 Check the order of operation.
Try 6!
x2 + 10x + 21 = (x + 3)(x + 7) You need to find 2 numbers which sum to 10 and whose product of 21. In this case 3 + 7 = 10 and 3 x 7 = 21.
sounds like 21: (7 x 2) is 14, plus 7 is 21