Question

100POINTSwhich quadratic function has the largest positive solution x^2-25=0

Answer 1

Answer:

$x^2-9=160$

Step-by-step explanation:

Verify the solutions of each quadratic function

case 1) we have

$x^2-25=0$

Adds 25 both sides

$x^2=25$

take square root both sides

$x=\pm5$

case 2) we have

$x^2+10=154$

Subtract 10 both sides

$x^2=154-10$

$x^2=144$

take square root both sides

$x=\pm12$

case 3) we have

$x^2-9=160$

Adds 9 both sides

$x^2=160+9$

$x^2=169$

take square root both sides

$x=\pm13$

case 4) we have

$x^2+49=50$

Subtract 49 both sides

$x^2=50-49$

$x^2=1$

take square root both sides

$x=\pm1$

Compare the solutions

The largest positive solution is x=13