SOLUTION: How do I solve this system of equations using substitution? {{{y=x^2-4x-1}}} {{{y=x+3}}}

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Question 646881: How do I solve this system of equations using substitution?

Answer by MathLover1(20849)   (Show Source): You can put this solution on YOUR website!

............1
.................2
____________________________________
.................2...here you have on one side, substitute it in 1

............1...solve for



or .......use quadratic formula to find





solutions:



or



now find

.................2...if



.................2...if




your pairs of solutions are:
,
and
,


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