Solve the simultaneous equations: x2 + y2 = 20, 3x=2-y

x = -4/5 or 2
y = 22/5 or -4

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Answered by Ishtiaq A. Maths tutor

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Help! How do I solve quadratic equations?


S is a geometric sequence. a) Given that (√x - 1), 1, and (√x + 1) are the first three terms of S, find the value of x. b) Show that the 5th term of S is 7 + 5√2


4x+2y=22, (y/2)+(x/4)=2.5


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