Algebra 1A Assign. #10
Name______Date______Period______
9.4 & 9.5 Extra Practice
1. Select All that Apply:Use the discriminant to determine which of the following equations have one solution.
x2 - 10x + 25 2x2 + 3x+ 14 = 0 2x2 + 5x = 3
5x2 -2x = 6 2n2 -4n = 5 25x2 -9 = 0
2. True or False:The discriminant of a perfect square trinomial is always going to be 0. ______
3. Write the letter of the graph that corresponds to the number of solutions to each discriminant below.
______Positive discriminant
______Negative discriminant
______Zero discriminant
Solve by taking the square roots.
4. 2x2 – 2 = 65. 2(x-3)2 – 2 = 30
Solve each equation by completing the square.
6. + 12x = 13 7. – 14x + 24 = 0
Solve each equation using the quadratic formula. If necessary, round your answer to the nearest tenth.
8.a) Find the discriminant. Show all work.
b) How many solutions does the equation have? _____
c) Is the equation factorable? Yes or no? _____
d) If yes, solve by factoring. If no, solve by using the
quadratic formula. If no solutions, write “no
real solution”. / 9.
a) Find the discriminant. Show all work.
b) How many solutions does the equation have? _____
c) Is the equation factorable? Yes or no? _____
d) If yes, solve by factoring. If no, solve by using the
quadratic formula. If no solutions, write “no real
solution”.
10.
a) Find the discriminant. Show all work.
b) How many solutions does the equation have? _____
c) Is the equation factorable? Yes or no? _____
d) If yes, solve by factoring. If no, solve by using the
quadratic formula. If no solutions, write “no real
solution”. / 11.
a) Find the discriminant. Show all work.
b) How many solutions does the equation have? _____
c) Is the equation factorable? Yes or no? _____
d) If yes, solve by factoring. If no, solve by using the
quadratic formula. If no solutions, write “no real
solution”.