I need help with the following problem. I forgot how to do these and this assignment is due tomorrow. Any help would be greatly appreciated!
Solve by substitution method:
x + y = 2
y = x^2 - 4
I need help with the following problem. I forgot how to do these and this assignment is due tomorrow. Any help would be greatly appreciated!
Solve by substitution method:
x + y = 2
y = x^2 - 4
Substitute the second one into the first one. Thus, you get :
$\displaystyle x + (x^2 - 4) = 2$
$\displaystyle x + x^2 = 6$
$\displaystyle x^2 + x - 6 = 0$
Now solve for $\displaystyle x$ using the factorization method or the quadratic formula, then substitute back the $\displaystyle x$'s into the first equation to find the $\displaystyle y$'s