SOLUTION: 1. m^2-14m+49=0 3.7c^2-2c=1 2. 8x^2+7x-3=0 4. .3k^2-.6k=2.4 5. 3x^2+4x-2=0 these are 5 different problems.

Algebra ->  Quadratic Equations and Parabolas  -> Quadratic Equations Lessons  -> Quadratic Equation Lesson -> SOLUTION: 1. m^2-14m+49=0 3.7c^2-2c=1 2. 8x^2+7x-3=0 4. .3k^2-.6k=2.4 5. 3x^2+4x-2=0 these are 5 different problems.       Log On


   

Question 314303: 1. m^2-14m+49=0 3.7c^2-2c=1


2. 8x^2+7x-3=0 4. .3k^2-.6k=2.4


5. 3x^2+4x-2=0
these are 5 different problems.
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
1.m%5E2-14m%2B49=0
Factor.
%28m-7%29%5E2=0
m=7
.
.
.
2.8x%5E2%2B7x-3=0
Use the quadratic formula,
x=%28-7+%2B-+sqrt%28145%29%29%2F16
.
.
.
3.7c%5E2-2c=1
7c%5E2-2c-1=0
Use the quadratic formula,
c=%282+%2B-+sqrt%2832%29%29%2F14
.
.
.
4.+.3k%5E2-.6k=2.4+
3k%5E2-6k-24=0
k%5E2-2k-8=0
Factor.
%28k-4%29%28k%2B2%29=0
k=4 and k=-2
.
.
.
5.3x%5E2%2B4x-2=0
Use the quadratic formula,
x=%28-4+%2B-+sqrt%2840%29%29%2F6