8(2x -3)= -16

Step 1: Expand the brackets.
Step 2: Make all the terms in x and the terms without x on separate sides of the equal sign.
Step 3: Divide both sides by the number in front of x.

Find the critical points of function f(x)=|x|/(x^2+8)+7

Find the critical points of f(x)=|x|/(x^2+8)+7

Two pumps were required to pump the water out of a submerged area after a hurricane. Pump A,the large of the two pumps can pump the water out in 36 hours,whereas it would take pump B 180 hours. Both pumps were working for the first 9 hours until pump A broke. How long did it take pump B to pump out the remaining water?

cosX-cos5X=4sinXcosXsin3X