Question

a)
$\sqrt{ \times + 3 = 4}$
x + 3 = 4​

Answer 1

$\large \sf \gray{ \sqrt{ \times + 3 = 4}}$

Raise both sides to the second power

$\sf \: ( \sqrt{ x-3})^{2} = (4)^{2}$

After squaring

• $\sf \: x-3 = 16$

Rearranged equation

• $\sf \: x -19 = 0$

Add 19 to both sides

• $\sf \: x = 19$

A possible solution is :

• $\sf \: x = 19$

Original equation

• $\sf \: \sqrt {x-3 = 4}$

Plug in 19 for x

• $\sqrt{(19)-3 = 4}$

Simplify

• $\sf \: \sqrt{16 = 4}$

Solution checks !!

Solution is:

• $\sf \: x = 19$