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次の式を因数分解しなさい。 |
(1) 3x2+7x+2 |
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(2) 4x2-11xy+6y2 |
(3) 27x3+8y3 |
(4) 216x3-1 |
(5) -64x3+144x2y-108xy2+27y3 |
(6) x3y+256-16xy-16x2 |
(7) 2(2x-1)2-11(2x-1)+15 |
(8) x2-y2+6y-9 |
(9) x4-29x2+100 |
(10) x4-16y4 |
(11) x4-x2-12 |
(12) 2x6+3x3-2 |
(13) x6-1 |
(14) (x2-7x)+4(x2-7x)-96 |
(15) 3x2y-xy2-2xy+3x-y-2 |
(16) 6x2+5xy+y2+x+y-2 |
(17) 7x2+4xy-3y2+15x-5y+2 |
(18) 8x2-yz+xz-8xy |
(19) 2x3+5x2y+4x2z-12xy2+10xyz-12y2z |
(20) (2x+y)(y+z)(2x+z)+2xyz | |
 解答 | |