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(b+2/3)〗^2=b^2+⋯+⋯
4b/3. va. 4/9
(2+3a)^2=4+12a+⋯
9a^2
(3a – 4)^2 = ... – 24a + ...
9a^2. va. 16
(2a + 5)^2 = 4a^2 + ... + ...
20a. Va. 25
(a – 5)^2 = ... – ... + 25
a^2 va. 10a
(a-6)^2=⋯-…+36
a^2. va. 12a
(2 + 3a)^2 = 4 + 12a + ...
9a^2
(7a – 3)^2 = ... – 42a + ...
49a^2 va. 9
(3a + 4)^2 = ... + 24a + 16
9a^2
(x-4)(x+4)
x^2-16
y^2-81
(y-9)(y+9)
(d-1.2)(d+1.2)
d^2-1.44
(c – d^2 ) (c + d^2 )
c^2-d^4
(a – x^9 ) (a + x^9 )
a^2-x^18
a^2-625
(a-25)(a+25)
x^2-169
(x-13)(x+13)
