Question

X²-y²=9 and x-y=1 whats the value x+y ?

Answer 1

Answer:

${x}^{2} - {y}^{2} = 9 \\ using \: identity \: a \\ {a}^{2} - {b}^{2} = (a + b)(a - b) \\ we \: get \\ (x + y)(x - y) = 9 \\ (x + y) \times 1 = 9 \\ (x + y) = 9$

hope this will help you.....

Answer 2

TODAY U ENJOY YR

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