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Determine the number to add to make each expression a perfect square trinomial. 1) x^2 + 8x

Question : Determine the number to add to make each expression a perfect square trinomial. 1) x^2 + 8x : 2163414

MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question.

Determine the number to add to make each expression a perfect square trinomial.

1) x2 + 8x

A) 4

B) 64

C) 8

D) 16

2) x2 - 20x

A) 100

B) 10

C) -10

D) -100

Solve the quadratic equation by completing the square.

3) p2 + 6p = 0

A) ±3

B) 9

C) 0, 6

D) -6, 0

4) p2 - 20p = 0

A) 100

B) 0, 20

C) ±10

D) -20, 0

5) a2 - 2a - 48 = 0

A) -42, -6

B) -8, 6

C) ±√(-48)

D) 8, -6

6) x2 + 4x - 21 = 0

A) 7, -3

B) -7, 3

C) 7, 3

D) -7, 1

7) z2 + 14z + 39 = 0

A) 7 ± √(39)

B) -14 + √(39)

C) -7 ± √(10)

D) 7 + √(10)

8) x2 - 8x = -15

A) ±√(15)

B) 12, 3

C) 5, 3

D) -5, -3

9) y2 + 3y - 9 = 0

A) (-3 ± 3√(5)/2)

B) (3 + 3√(5)/2)

C) (-3 ± 3√(5))

D) (-3 - 3√(5)/2)

10) x2 + 4x = 7

A) -2 ± 2√(11)

B) -1 ± √(11)

C) -2 ± √(11)

D) 2 + √(11)

11) x2 = 3 - 4x

A) -2 ± √(7)

B) -2 ± 2√(7)

C) -1 ± √(7)

D) 2 + √(7)

12) z2 + 4z - 7 = 0

A) 2 + √(11)

B) -1 ± √(11)

C) -2 ± 2√(11)

D) -2 ± √(11)

13) x2 + 10x - 7 = 0

A) 5 ± 4√(2)

B) -10 ± 4√(2)

C) -5 ± 16√(2)

D) -5 ± 4√(2)

14) x2 - 8x + 11 = 0

A) -4 ± √(5)

B) 8 ± √(5)

C) -8 ± 2√(5)

D) 4 ± √(5)

15) x2 + 7x = 3

A) -7 ± √(61)

B) (-7 ± 2√( 3)/2)

C) (-7 ±√(61)/2)

D) (7 ± √(61)/2)

16) x2 - 9x - 7 = 0

A) (9 ± √(109)/ 2)

B) 9 ± √(109)

C) (-9 ± √(109)/ 2)

D) (9 ± 2√( 7)/ 2)

17) x(x - 4) = 45

A) -9, 5

B) -5, 9

C) -9, 1

D) 9, 5

18) x(x + 3) = 88

A) 11, 8

B) -11, 1

C) -8, 11

D) -11, 8

Use the square root property to solve the quadratic equation.

19) x2 = - 121

A) - 11

B) ± 14,641

C) ± 11

D) No real solution

20) x2 - 10 = 0

A) No real solution

B) √(10)

C) ± √(10)

D) ± 10

21) 3x2 - 6 = 0

A) ± (√(6)/3)

B) √(2)

C) ± (√(18)/3)

D) ± √(2)

22) 3x2 = 25

A) ± (√(75)/3)

B) ± (5√(3)/3)

C) ± (5/3)

D) (5√(3)/3)

23) 2x2 - 3x - 5 = 0

A) (2/5), 0

B) (2/5), 1

C) (5/2), -1

D) (2/5), -1

24) 3x2 - 21x = -30

A) 3, 2

B) 3, -5

C) 2, 5

D) -2, -5

25) 3x2 + 3x = 60

A) 5, -4

B) -5, 4

C) -5, 12

D) -20, 1

26) 3y2 + 12y + 7 = 0

A) -2 ± (√(15)/3)

B) 2 ± (√(15)/3)

C) -2 ± (√(15)/6)

D) 2 ± (√(15)/6)

27) 6x2 + 8x + 1 = 0

A) (-8 ± √(10)/6)

B) (-4 ± √(22)/6)

C) (-4 ± √(10)/6)

D) (-4 ± √(10)/12)

28) 5x2 + 15x + 26 = 0

A) (-15 ± √(295)/5)

B) (15 ± √(295)/10)

C) no real solution

D) (-15 ± √(295)/10)

29) 2x2 - 4x + 9 = 0

A) (2 ± √(14)/ 2)

B) no real solution

C) (-2 ± √(14)/2)

D) (2 ± √(14)/4)

30) 2x2 = -4x + 9

A) (2 ± √(22)/4)

B) (-2 ± √(22)/4)

C) (-2 ± √(22)/2)

D) (2 ± √(22)/2)

31) 3x2 = -6x - 2

A) (-3 ± √(15)/3)

B) (-3 ± √(3)/3)

C) (-3 ± √(3)/6)

D) (-6 ± √(3)/3)

Solution
5 (1 Ratings )

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Mathematics 2 Years Ago 225 Views
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