Solve 3p+2r=7, p^2-2r=11

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1 Answer

3p + 2r = 7

p^2 - 2r = 11

Add the equations like this:

3p + 2r + p^2 - 2r = 7 + 11

3p + p^2 = 18

p^2 + 3p - 18 = 0

(p + 6)(p - 3) = 0

p = -6, 3
by Level 13 User (103k points)

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