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b) 9(x^2) + 24x + 16
c) 36(y^2) + 24y + 4
d) 1/4(a^2) + 5a + 25
e) 0.04x + 0.4xy + y^2
f) 1.44(a^2) - 2.4a + 1
g) 4(x^2) + 20xy + 25(y^2)
h) 6.25(x^2) + 2.5×2/3×x + 1/9
6.25(x^2) + (5/3)x + 1/9
i) 4/25(x^2) + (1/5)x + 1/16
j) 2.25(a^2) + 5,4ab + 3.24(b^2)
k) 16(y^2) + 8y(z^2) + z^4
l) 9/16(a^2) + 18/4(a(b^2)) + 9(b^4)
m) 9 - 30x + 25(x^2)
n) 9/25(a^2) + (12/35)a + 4/49
o) 25/16(x^2) + 5xy + 4(y^2)
p) 100/9(a^2) + 20ab + 25/4(b^2)