Write the following squares of binomials as trinomias:
(i) 
(ii) 
(iii) 
(iv) 
(v) 
(vi) 
(vii) 
(viii) 
(ix) 
(x) 
(xi) 
(xii) 
(i) 
x2 + 2 (x) (2) + 22
= x2 + 4x + 4
(8x)2 + 2 (8x) (3b) + (3b)2
= 16x2 + 48xb + 9b2
(2m)2 + 2 (2m) (1) + 12
= 4m2 + 4m + 1
(9a)2 + 2 (9a) (
) + (
2
= 81a2 + 3a + 
(x)2 + 2 (x) (
) + (
)2
= x2 + x3 + 
x4
(
)2 – 2 (
) (
) + (
)2
= 
x2 - 
+ 
y2
(3x)2 – 2 (3x) (
) + (
)2
= 9x2 – 2 + 
(
)2 – 2 (
) (
) + (
)2
= 
- 2 + 
(
)2 – 2 (
) (
) + (
)2
= 
a2 - 
ab + 
b
(a2b)2 – 2 (a2b) (bc2) + (bc2)2
= a4b2 – 2a2b2c2 + b2c4
(
)2 + 2 (
) (
) + (
)2
= 
+ 
a + 
(x2)2 – 2 (x2) (ay) + (ay)2
= x4 – 2x2ay + a2y2
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