X ^ 2 - 9
= x ^ 2 - 3 ^ 2
It turns into 3 ^ 2
Because 3 ^ 2 = 9
The final answer is
= ( x + 3 )( x - 3 )
remember the formula :
a^2 - b^2 =(a+b)(a-b)
B. slope is -1/2
This is because the m-value aka the slope is always the reciprocal if the line is perpendicular
No me han dado un paso a ver a la policía y ha dicho la que han dado cuenta que ha sido un policía y ha
