SOLUTION: Solve the system by any algebraic method (substitution or addition/subtraction). Show algebraic work that fully supports your answer. Exact answers only, no decimal approximations.

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Question 1104566: Solve the system by any algebraic method (substitution or addition/subtraction). Show algebraic work that fully supports your answer. Exact answers only, no decimal approximations.
𝑥2 + 𝑦2 = 4
𝑦2 − 𝑥 = 4
Answer by josgarithmetic(39631) About Me  (Show Source):
You can put this solution on YOUR website!
You should eliminate the y^2; or do this:

system%28y%5E2=4-x%5E2%2Cand%2Cy%5E2=4%2Bx%29

and from this, 4-x%5E2=4%2Bx----now solve this and use for finding y.