quadratic equations quiz

x^2 + 20x + ________.

100. (x+10)^2

x^2 + 11x + __________.

121/4. (x+11/2)^2

x^2 -16x + _________.

64. (x-8)^2

x^2 + 9x + __________.

81/4. (x+9/2)^2

for every real #

a=0 b=0

r^2 + 12r + 3 = 0

r = -6 +- square root of 33

w^2 - 9 = 0

w= +_ 3

x^2 + 14x = -13

x = -1 x = -13

3x^2 = 18x - 9 = 0

x = -3 +- square root of 12

2x^2 + 11x + 14 = 0

x = -4 x=2

x^2 + 10x -3 = 0

x = -5 +- square root of 28

3x^2 + 8x + 2 = 0

x = -8 +_ square root of 30 all over 6

p^2 + 9p - 2 = 0

x = -9 +_ square root of 89 all over 2

3x^2 - 4x + 1 = 0

x = 1 x = 1/3

5y^2 - 12y + 3 = 0

x = 12 +_ square root of 84 all over 10

7x^2 - 2x - 1 = 0

x = 2 +_ square root of 32 all over 14

2x^2 - 28x + 8 = 0

x = 7 +- square root of 45

x^2 - 6x = -8

x= 4 x = 2

x^2 + 5x + 6 = 0

x=-2 x=-3

-2x + 21 - 3x^2 = 0

x=-3 x=7/3

(x+4)(2x-9)=0

x=-4 x=9/2

(x-3)(x-7)=0

x=3 x=7

x^2 -8x = 7

x=4 +- square root of 23

x^2 - x - 42 = 0

x=7 x=-6

x^2 - 64 = 0

x=8 x=-8

standard from of quadratic equation

y= ax^2+bx+c