( SOMEONE ANSWER PLEASE ) [ I WILL GIVE BRAINLIEST ] to the person who can explain as to how to do an equation like this. I need an explanation because I want to understand the concept. How do you do an equation like this? ( LOOK AT IMAGE PLEASE )

Find the missing factor in exponential form 48^2=3^2 • ?

Which value is not a solution of 8x^3 – 1 = 0

If m∠abc = 70°, what is m∠abd? justify your reasoning.  using the addition property of equality, 40 + 70 = 110, so m∠abd = 110°.  using the subtraction property of equality, 70 − 30 = 40, so m∠abd = 30°.  using the angle addition postulate, 40 + m∠abd = 70. so, m∠abd = 30° using the subtraction property of equality.  using the angle addition postulate, 40 + 70 = m∠abd. so, m∠abd = 110° using the addition property of equality.