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Online Quiz (Worksheet A B C D)

Questions Per Quiz = 2 4 6 8 10

Grade 7 - Mathematics
4.46 Fill in the Blanks - II

Example: x2+16x+_____?
Solution: (x)2 + 2.8.x + _____
This is the form of a2+2.a.b+____
If the given expression is to be the square of a binomial then last term = b2 = 82 = 64
Expression is = x2+16x+64 which is equal to (x+8)2.
Directions: Fill in the following problems and write the answer in terms of (a+b)2 or (a-b)2 form. Also write at least ten examples of your own.
Q 1: 12x2 - _____ + 16.
(3x-1)2
(2x-4)2
(3x-4)2
(3x-2)2

Q 2: _____ - 12x + 4.
(3x+2)2
(3x-2)2
(5x+2)2
(x+5)2

Q 3: 9x2 + 12x + _____.
(4x+2)2
(2x+2)2
(x+5)2
(3x+2)2

Q 4: _____ + 36x + 4.
(9x+2)2
(5x-2)2
(9x-4)2
(9x-2)2

Q 5: 36x2 - 60x + _____.
(2x+2)2
(2x-1)2
(4x-5)2
(6x-5)2

Q 6: _____ + 72x + 81.
(4x+9)2
(4x-5)2
(4x-9)2
(2x-9)2

Question 7: This question is available to subscribers only!

Question 8: This question is available to subscribers only!


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