Hi can you help me ? solve the equation by the method of vision:
x²-7x+12=0

solve the problem by dividing it into full squares:
x²-8x-8=0

Express the following as a function of a single angle. cos(60) cos(-20) - sin(60) sin(-20)

This is about circle theorems. someone asap : (

The party planning committee has to determine the number of tables needed for an upcoming event. if a square table can fit 8 people and a round table can fit 6 people, the equation 150 = 8x + 6y represents the number of each type of table needed for 150 people.