Using substitution solve the following system of equations x^2 -y=1 and x+y=11

asked Jul 9, 2018 696 views

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We have y = 11 - x;
Then, x^2 - 11 + x = 1;
x^2 + x - 12 = 0;
a = 1; b = 1; c = -12;
We obtain the solution x1 = (- 1 +

Bsara answered Jul 14, 2018

by Bsara

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