SOLUTION: Solve using the quadratic formula:
x2 – 3x = 7x – 2
x2 – 7x – 1 = -7
both of these need to in solve these 2 I have not been able to get this done.
Algebra ->
Absolute-value
-> SOLUTION: Solve using the quadratic formula:
x2 – 3x = 7x – 2
x2 – 7x – 1 = -7
both of these need to in solve these 2 I have not been able to get this done.
Log On
Question 109499: Solve using the quadratic formula:
x2 – 3x = 7x – 2
x2 – 7x – 1 = -7
both of these need to in solve these 2 I have not been able to get this done. Answer by stanbon(75887) (Show Source):
You can put this solution on YOUR website! Solve using the quadratic formula:
x2 – 3x = 7x – 2
x^2-10x+2 = 0
x = [10 +- sqrt(100-4*2)]/2
x = [10 +- sqrt(92)]/2
x = [10 +- 2sqrt(23)]/2
x = 5 + sqrt23 or x = 5 - sqrt23
==============
x2 – 7x – 1 = -7
x^2-7x+6 = 0
x = [7 +- sqrt(49-4*6)]/2
x = [7 +- sqrt(25)]/2
x = [7 +- 5]/2
x = 6 or x = 1
=================
Cheers,
Stan H.
(