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a. \(x^2-4x+4=x^2-2.x.2+2^2=\left(x-2\right)^2\)
b. \(x^2-4y^2=x^2-\left(2y\right)^2=\left(x-2y\right)\left(x+2y\right)\)
c. \(4x^2-4x+1=\left(2x\right)^2-2.2x.1+1^2=\left(2x-1\right)^2\)
d. \(x^3-3x^2+3x-1\)
\(=x^3-1^3-3x^2+3x\)
\(=\left(x-1\right)\left(x^2-x+1\right)-3x\left(x-1\right)\)
\(=\left(x-1\right)\left(x^2-x+1-3x\right)\)
\(=\left(x-1\right)\left(x^2-4x+1\right)\)
e. \(4x^2-9=\left(2x\right)^2-3^2=\left(2x-3\right)\left(2x+3\right)\)
g. \(4x^2+12xy+9y^2=\left(2x\right)^2+2.2x.3y+\left(3y\right)^2=\left(2x+3y\right)^2\)
a) \(x^3+3x^2+3x+1=\left(x+1\right)^3\)
b) \(27y^3-9y^2+y-\frac{1}{27}=\left(3y-\frac{1}{3}\right)^3\)
c) \(8x^6+12x^4y+6x^2y+y^3=\left(2x^2+y\right)^3\)
d) \(\left(x+y\right)^3\left(x-y\right)^3=\left(x^2-y^2\right)^3\)
e) \(\left(x^2-y^2\right)^2\left(x+y\right)\left(x-y\right)=\left(x^2-y^2\right)^3\)
a) x² + 10x + 25 = (x + 5)^2
b) 16x² – 8x + 1 = (4x - 1)^2
c) 4x² + 12xy + 9y² = (2x + 3y)^2
d) x³ + 3x² + 3x + 1 = (x + 1)^3
e)27y³ – 9y² + y - 1/27 = (3y - 1/3)^3
g) 8x6 + 12x4y + 6x2y2 + y3 = (2x^2 + y)^3
a) \(x^2+10x+25=x^2+2\cdot5\cdot x+5^2=\left(x+5\right)^2\)
b) \(16x^2-8x+1=\left(4x\right)^2-2\cdot4x+1=\left(4x-1\right)^2\)
c) \(4x^2+12xy+9y^2=\left(2x\right)^2+2\cdot2x\cdot3y+\left(3y\right)^2=\left(2x-3y\right)^2\)
d) \(x^3+3x^2+3x+1=\left(x+1\right)^3\)