Posted by Anonymous on Sunday, September 26, 2010 at 12:07pm.
1-AND PRODUCTION sum of roots of the equation :X²-X-6=0
2-FOR what values of A the equation has no solution ax ² +3 x-7 = 0
3-For what values of x the equation has 2 solution X²-X+C=0
4-Solve the equation (X-1)²-4=0
5-Solve the equation a)2/2 x^(-3)=2√2
help me with the solution of this equations please
- math - MathMate, Sunday, September 26, 2010 at 12:57pm
Factor the equation to
So the roots are 3 and -2.
Calculate the sum of roots.
A quadratic equation ax²+bx+c=0 has no real roots when the discriminant is less than zero, that is:
For the present case,
Solve for the inequality in terms of a.
3. and up
Please show some work to indicate where you have difficulties.
- math - Anonymous, Sunday, September 26, 2010 at 1:20pm
i have difficulties with this three equations
- math - MathMate, Sunday, September 26, 2010 at 2:14pm
2/(2x^(-3)) = 2√2/1
Cross multiply to get:
2*1 = (2√2)*(2x^(-3))
Cross multiply again:
Can you take it from here?
Solve for x by factoring
similar to a).
Post your answer for checking if you wish.
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