\(a,=\left(x+1\right)^2\\ b,=\left(2x-1\right)^2\\ c,=\left(a-3\right)^2\\ d,=\left(6a-5b\right)^2\\ e,=\left(2x^2-1\right)^2\\ f,=\left(3x^2-4y^2\right)^2\)
a: \(x^2+2x+1=\left(x+1\right)^2\)
b:\(1-4x+4x^2=\left(1-2x\right)^2\)
c: \(a^2-6a+9=\left(a-3\right)^2\)
d: \(36a^2-60ab+25b^2=\left(6a-5b\right)^2\)
e: \(4x^4-4x^2+1=\left(2x^2-1\right)^2\)
x2 +2x+1=(x+1)2
1-4x+4x2=(1-4x)2
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