Question

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

x^2+10=154
X^2-9=160
x^2+49=50

Answer 1

X^2-9=160

Explanation:

Answer on Algebra Nation.

Answer 2

`x^2-9=160`

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