Solve the inequality. State the solution set using interval notation and graph.

x-3/x+4>7

x^2-5x-7<0

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- August 2nd 2006, 08:03 PMpashahInequalities
Solve the inequality. State the solution set using interval notation and graph.

x-3/x+4>7

x^2-5x-7<0 - August 2nd 2006, 11:44 PMearbothQuote:

Originally Posted by**pashah**

I assume that your first problem reads:

Multiply by denominator. The next steps depends on the sign of the denominator!

. that means

or

. So the solution is:

2nd problem:

Solve this**equation:**. You'll get:

Because this equation belongs to a quadratic funtion which open upward, the part of the function between the zeros is below the x-axis, that means it is smaller than zero. Therefore your solution is:

Greetings

EB - August 3rd 2006, 10:36 AMearbothQuote:

Originally Posted by**pashah**

I've attached the graph of the 1rst problem.

Greetings

EB - August 3rd 2006, 10:59 AMearbothQuote:

Originally Posted by**pashah**

I've attached the graph of your 2nd problem.

Greetings

EB