Quadratic Expressions Worksheets Page 31
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36number and algebra
<InVeSTIgaTIOn> FOr rICH TaSK Or <number and algebra> FOr PuZZle
number and algebra
COde PuZZle
Isaac Newton demonstrated
this in 1665.
Factorise the trinomials on the left of the page. Join the dot next
to each with the dots next to its factors, using straight lines. The two
lines will pass through a letter and number giving the puzzle’s code.
2
= 3x
+ 14x + 8
=
2
= 2x
+ 3x – 9
=
2
= 2x
– x – 1
=
2
= 2x
+ 5x – 3
(x + 1)
G
=
4
2
= 2x
– 3x – 2
T
(x – 1)
C
=
2
= 3x
+ 2x – 1
11
(x – 2)
=
D
6
2
= 2x
– 9x + 4
7
(x + 3)
E
=
12
2
= 3x
+ x – 2
H
(x – 4)
=
U
10
2
9
= 3x
– 13x – 10
(x + 4)
=
S
13
2
= 4x
– 4x – 15
(x – 5)
=
15
2
= 3x
– 11x – 4
X
(2x + 1)
=
N
2
= 2x
– x – 3
F
(2x – 1)
=
L
2
= 3x
– 8x + 4
19
5
14
=
(2x + 3)
M
1
2
17
= 3x
+ 4x + 1
=
(2x – 3)
2
= 3x
– 10x – 8
O
R
18
=
(2x – 5)
2
= 2x
+ 5x – 12
16
=
(3x + 1)
2
= 2x
– 7x + 6
2
W
P
8
I
=
(3x – 1)
2
= 2x
– 11x + 12
=
(3x + 2)
A
3
2
= 3x
– 7x + 2
(3x – 2)
=
1
2
3
4
5
6
3
7
2
4
3
8
9
10
11
5
12
13
14
15
10
9
3
16
4
12
17
5
14
15
11
3
15
15
5
17
5
18
4
19
14
6
14
12
17
8
Maths Quest 10 + 10A
298
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