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Remarkable Identities
Test Description: This game aims to review the Remarkable identities course for Grade 8 students.
Instructions: Answer all questions to get your test result.
1) x2 – 6x + 9 =
A
-5x + 9
B
(x-3)^2
C
(x+3)^2
D
(x-3)(x+3)
2) (x+2)(-3x+5)=
A
3x2 –x +10
B
3x2-x+10
C
-3x2+x+10
D
-3x2-x+10
3) The factorized form of: (x-5)^2-2(x-5)(x+1) is:
A
-(x-5)(x+7)
B
4x2-2x+1
C
(x-5)(-x-3)
D
-6(x-5)
4) If f(x) = x2 - 6x - 9 Then f(-3)=
A
-2
B
15
C
18
D
0
5) (61)2-(59)2=
A
120
B
240
C
2
D
4
6) 9x2 - 1=
A
(9x+1)(9x-1)
B
(x+3)(x-3)
C
(3x-1)(3x+1)
D
(3x-1)2
7) (x-5)2-2=
A
x2-10x+23
B
x2+10x+27
C
x2-10x-27
D
x2+10x+23
8) The factorized form among the following is:
A
(x-3)2 - 2(2x+5)
B
X2 – 2x + 3
C
(3-x)(2x-5)
D
(x-3)+(2x-5)
9) (2x+y)2 - (2x-y)2 =
A
2x(2x-y)2
B
8xy
C
(2x+y)(2x-y)
D
4xy
10) (5x+2)2-3x(10x+4)=
A
(5x+2)(x+2)
B
(10x+4)(x-2)
C
(10x+4)(-x+2)
D
(5x+2)(-x+2)
*select an answer for all questions
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