Solve the system by the addition method.x2 + y2 = 2525x2 + 9y2 = 225

A. {(0, 5), (0, -5)}
B. {(0, 3), (0, -3)}
C. {(5, 0), (-5, 0)}
D. {(3, 0), (-3, 0)}


Answer: A

Mathematics

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Provide an appropriate response.Solve: x2 = 5x

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Solve the system of equations using Gaussian elimination or Gauss-Jordan elimination.x - y + z = -3x + y + z = 5x + y - z = -1

A. (3, -2, 4) B. (-2, 3, 4) C. (-2, 4, 3) D. No solution

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Find the product.(x + 4)4

A. x4 + 16x3 + 128x2 + 256x + 256 B. x4 + 16x3 + 96x2 + 16x + 256 C. x4 + 4x3 + 96x2 + 128x + 256 D. x4 + 16x3 + 96x2 + 256x + 256

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Find the domain of f. Write your answer in interval notation.f(x) = 

A. (0, ?)
B.
C. (-?, ?)
D. (-?, 0)

Mathematics