Question : Solve by completing the square. Give exact solutions. Simplify radicals and reduce : 2139488
Solve by completing the square. Give exact solutions. Simplify radicals and reduce.
133) 6x2 + 3x - 3 = 0
A) , -1
B) 2, 0
C) 2, 1
D) 2, -1
134) 5x2 + 9x = 0
A) ±
B) - , 0
C) , 0
D) 0
135) 2x2 + 6x = -2
A)
B)
C)
D)
136) 2x2 = -12x - 3
A)
B)
C)
D)
137) 7x2 + 20x = -14
A)
B)
C)
D)
138) x2 + 6x = 5
A) -3 ± 1√14
B) -1 ± √14
C) -3 ± √14
D) 3 + √14
139) x2 = 9 - 4x
A) -2 ± √13
B) -2 ± 1√13
C) -1 ± √13
D) 2 + √13
Provide an appropriate response.
140) Solve the quadratic equation by completing the square:
x2 + 8x + 12 = 0
A) x = -4, -4
B) x = -2, -6
C) x = 2, 6
D) x = 1.3, -9.3
141) Solve for x by completing the square: x2 + 6x = 30
A) 3.24, -9.24
B) 1.62, 4.62
C) 6.49, 3.49
D) 13, 10
142) Solve for x by completing the square: 2x2 + 4x = 25
A) 5.34, 3.34
B) 10.7, 8.7
C) 21.4, 15.4
D) 2.67, -4.67