Question

Solve the equations 1. 16x^2-1=0 2. 36z^2 96z 15=0

Answer 1

$16x^2-1=0 2$ 

$16x^2-1=0 2:x$ 

$16x^2=1$   $|Add \ 1 \ to \ both \ sides|$

$x^2= \dfrac{1}{16}$   $|Divide \ both \ sides \ by \ 16|$

$x^2= \sqrt{\dfrac{ \sqrt{1}}{ \sqrt{16}}}$  $|Take \ the \ square \ root \ of \ both \ sides|$

$x= \dfrac{1}{4}$