Question

w the following simultaneous equations for x and y.
m(x + y) + n(x – y) – (m2 + mn + n2) = 0;
n(x + y) + m(x - y) – (m2 – mn + n2) = 0.
(1) Let x + y = a, x - y = b.
(2) Transfer the terms not containing x and y to RHS.
(3) Add equations, substitute the values of a and b and solve.​

Answer 1

Step-by-step explanation:

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