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次の式を因数分解しなさい。 |
(1) 6x2−11x−10 |
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(2) (xy+4)2+(4x−y)2 |
(3) (x2+y2)(p2+q2)−(px+qy)2 |
(4) 2(2x−1)2+3(2x+3)−11 |
(5) x4−81y4 |
(6) x4−68x2y2+256y4 |
(7) 8x6+215x3y3−27y6 |
(8) (x2−x)2−14x2+14x+24 |
(9) xy+x+y+1 |
(10) xy−yz+pz−px |
(11) x2−4xy+4y2−x−2y |
(12) x3+5x2−9x−45 |
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(15) x2−(2y−3)x−(3y2+y−2) |
(16) 3x2+7xy+x−3y+2y2−2 |
(17) 2x2−3y2+5xy+7x+7y+6 |
(18) x2y−5xyz−y−xy2+x−5z |
(19) x2y2−x2y−2x2−9y2+9y+18 |
(20) x(y+z)2+y(z+x)2+z(x+y)2−4xyz | |
解答 | |