Question

Quadratic Function PLEASE HELP!! questions attached below

Answer 1

28) ANSWER: x=5
Because 5*5=25.
29) ANSWER: x=4
3x^2=48
Divide both sides by 3.
x^2=16
x=4
Because 4*4=16.

Answer 2

For this case we have two quadratic equations:

$x ^ 2 = 25$

We apply square root to both sides of the equation:

$x = \pm \sqrt {25}\\x = \pm5$

Thus, we have two solutions:

$x_ {1} = 5\\x_ {2} = - 5$

On the other hand we have:

$3x ^ 2 = 48$

We divide by 3 on both sides of the equation:

$x ^ 2 = \frac {48} {3}\\x ^ 2 = 16$

We apply square root to both sides of the equation:

$x = \pm \sqrt {16}\\x = \pm4$

Thus, we have two solutions:

$x_ {1} = 4\\x_ {2} = - 4$

Answer:

Equation 1:

$x_ {1} = 5\\x_ {2} = - 5$

Equation 2:

$x_ {1} = 4\\x_ {2} = - 4$