factor polynomials completely
a^2 + 8 a + 12
x^2 + 8 × + 15
2x^2 - 5 x -12
6a^2 + 9 ab + 3b^2
4x^2-12 xy + 9y^2 ?
a^2 + 8 a + 12
x^2 + 8 × + 15
2x^2 - 5 x -12
6a^2 + 9 ab + 3b^2
4x^2-12 xy + 9y^2 ?
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Answer:
a²+8a+12 = (a+6)(a+2)
x²+8x+15 = (x+5)(x+3)
2x²-5x-12 = (x-4)(2x+3)
6a²+9b+3b² = 3(2a²+3b+b²) or 3(a+b)(2a+b)
4x²-12xy+9y² = (2x-3y)²