SOLUTION: what two numbers add to -3/2 and multiply to -1
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Question 698830: what two numbers add to -3/2 and multiply to -1
Answer by MathLover1(20849) (Show Source): You can put this solution on YOUR website!
let's numbers be and
if two numbers add to , we have
....eq. 1
and if they multiply to , we have
...eq. 2
solve the system:
....eq. 1
...eq. 2
________________________
...eq. 2....solve for
....substitute in eq. 1
....eq. 1...solve for
...cross multiply
...use quadratic formula
solutions:
or
now find
....plug in
and
....plug in
so, the numbers are:
and
or
and
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