SOLUTION: Solve by using the quadratic formula... 1. 2x^2-7x=5 2. x^2=x+4 3. Find the distance between (7,0) and (-7,0) 4. Solve...x^2+8=17

Question 86665: Solve by using the quadratic formula...
1. 2x^2-7x=5
2. x^2=x+4
3. Find the distance between (7,0) and (-7,0)
4. Solve...x^2+8=17
Answer by Flake(45) (Show Source): You can put this solution on YOUR website!
Solution: Always write in form of "(ax2 + bx + c)=0".
So you can use
or
to solve
-----------
#1

=
and
=
****Are you sure you copied the equation right?***
--------------------
#2

and
----------------------------
#3) Find the distance between (7,0) and (-7,0)
Draw right-triangle

Distance is
-----------------------
#4. Solve...
same as #1, and #2 use
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