Download Algebra 2 6.4 Day 2

Algebra 2
6.4 Day 2
Review:
Solve by completing the square:
Solve by factoring:
x 2  8x  15  0
x 2  8x  15  0
Solve using the graphing calculator:
x 2  8x  15  0
Find the value of c that makes each trinomial a perfect square: then write the trinomial as a perfect
square.
x2 
7
xc
3
Lorenzo has 48 feet of fencing to make a rectangular dog pen. He will use his house as one side.
a. What dimensions produce a dog pen with the greatest area?
b. Find the maximum area of the dog pen.
An object is thrown upward into the air with an initial velocity of 128 feet per second. The formula
h(t) = -16t2 + 128t gives its height above the ground after t seconds. Find the maximum height
reached by the object and the time that the height is reached.