Question

Given that x- y2 = 48 and x+y=8. Then x-y
6
8
7
12


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Answer 1

Answer:

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Answer 2

Step-by-step explanation:

${x}^{2} - {y}^{2} = (x + y)(x - y) \\ {x}^{2} - {y}^{2} = 48 \\ x + y = 8 \: \\ then \\ 48 = 8 \times (x - y) \\ (x - y) = \frac{48}{8} = 6$