Show that the equation se 8xt 4y 416²o represent a parabo la fine
the coordinates of its vertet focus
а and the equantion of its directrix
ains and lactus rectum​

Find the sum of 4x^{2} -4+6 and -7^{2} +3x+1

Successful implementation of a new system is based on three independent modules. module 1 works properly with probability 0.96. for modules 2 and 3, these probabilities equal 0.95 and 0.90. compute the probability that at least one of these three modules fails to work properly.

How is working backward similar to solving an equation?