A) (6x²+x+3)
B) 2x(6x²+x-3)
C) (6x²+x-3)
D) 2x(6x²+x+3)

A) (2y-z)(y-3)
B) (2y-z)(y+3)
C) (2y+z)(y-3)
D) (2y+z)(y+3)

A) (3t+s)(5a-b)
B) (3t-s)(5a-b)
C) (3t-s)(5a+b)
D) (3t+s)(5a+b)

A) xyz(z²-y²-x²)
B) xyz(z²+y²+x²)
C) xyz(z²-y²-x²)
D) xyz(z²-y²+x²)

A) (x²+2)
B) x*1
C) x²*2
D) (x²+2)(x+1)

A) (p²-1)(2p+1)
B) (p²-1)(2p-1)
C) (p²+1)(2p-1)
D) (p²+1)(2p+1)

A) 2u(v+z)*5w(z+v)
B) v*z
C) 2u*5w
D) (2u-5w)(v+z)

A) (6x-5)(6x+5)
B) (6x+5)(6x+5)
C) (6x+5)(6x-5)
D) (6x-5)(6x-5)

A) (a-2b)(a+2b)
B) (a-4b)⁴
C) (a-b+a-b)²
D) (a-b)²

A) (2xy-1)(2xy-1)
B) (2xy+1)(2xy+1)
C) (2xy+1)(2xy-1)
D) (2xy-1)(2xy+1)

A) (7x-8y)(7x+8y)
B) (x-y)⁴⁹*⁶⁴
C) (7x-8y)+(7x+8y)
D) (64y-49x)⁴

A) (x-y)(x+y)
B) (x+y)(x+y)(x²+y²)
C) (x-y)(x+y)(x²+y²)
D) (x+y)(x-y)

A) -x⁶y⁶
B) 0
C) (x+y)²(x³+y³)
D) (x+y)(x⁶+y⁶)

A) (x-y)(x+y)(x²+y²)(x⁴+y⁴)
B) (x²+y²)(x⁴+y⁴)
C) (x²-y²)(x⁴+y⁴)
D) (x+y)(x-y)(x²+y²)(x⁴+y⁴)

A) 0
B) (x-y)(x+y)(x²+y²)
C) (a-4b)(a²+4ab+16b²)
D) (a-4b)(a+4a)

A) (2xy-3)(4x²y²+6xy-9)
B) (2xy-3)(4x²y²-6xy+9)
C) (2xy+3)(4x²y²-6xy+9)
D) (2xy+3)(4x²y²+6xy-9)

A) (y+5)(y-5)(y+5)
B) 0
C) (y²+5y)
D) (y+5)(y²-5y+25)

A) (y²-y+1)(y²-y+1)
B) (y²+y+1)(y²-y+1)
C) (y-1)(y+1)(y²+y+1)(y²-y+1)
D) (y-1)(y-1)(y²+y+1)(y²-y+1)

A) (1-x)(1+x+x²)
B) 0
C) x³x³
D) (1-x)(1+x)

A) (x-3)²
B) (x-3)(x-2)
C) (x-3)-(x-2)
D) (x-3)+(x-2)

A) (x-4)(x-6)
B) (x+4)(x+6)
C) (x-4)(x+6)
D) 0

A) (y+5)(y+2)²
B) (y+5)(y+2)
C) (y+5)+(y+2)
D) (y+5)-(y+2)

A) (y²-3)(y²-7)
B) (y²+3)²
C) 0
D) (y²+3)(y²+7)

A) (x-2)(x+2)(x²+1)
B) (x+2)²(x²+1)
C) (x-2)(x+2)(x²-1)
D) (x²+1)²

A) (x-6)(x-2)
B) (x+6)(x-2)
C) (x-2)³
D) 0

A) (r-5)(r+5)
B) (r-5)²
C) (r+5)(r-5)
D) (r+5)²

A) (x-5)²
B) (x+5)²
C) (x+5)(x-5)
D) (x-5)(x+5)

A) (3x+2)(2x+3)
B) (3+2x)²
C) (3x-2)(2x+3)
D) (3+2x)

A) (2mv)(3)
B) (3mv-3mv)
C) (3m-v)²
D) 0

A) (rs-2t)(r²s²+2rst+4t²)
B) (rs-2t)(r²s²-2rst+4t²)
C) (rs+2t)(r²s²+2rst+4t²)
D) (rs-2t)(r²s²+2rst-4t²)