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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 | |