求解以下十道初二因式分解数学题
2个回答
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19 x(x + 2)(2x - 1)
20 (y - 1)(y + 1)(y^2 - 8)
21 21 x^2[x-( 1 - 3^(1/2)/3)][x-(3^(1/2)/3 + 1)]
22 [x-( 1/3 - 7^(1/2)/3)][x-(7^(1/2)/3 + 1/3)]
23 {a-( b - (14^(1/2)*b)/2)}{a-(b + (14^(1/2)*b)/2)}
24 {x-((2*y)/3 - (34^(1/2)*y)/3)}{x-((2*y)/3 + (34^(1/2)*y)/3)}
25 {x-(- 6^(1/2)/2 - 3/2)}{x-(6^(1/2)/2 - 3/2)}
20 (y - 1)(y + 1)(y^2 - 8)
21 21 x^2[x-( 1 - 3^(1/2)/3)][x-(3^(1/2)/3 + 1)]
22 [x-( 1/3 - 7^(1/2)/3)][x-(7^(1/2)/3 + 1/3)]
23 {a-( b - (14^(1/2)*b)/2)}{a-(b + (14^(1/2)*b)/2)}
24 {x-((2*y)/3 - (34^(1/2)*y)/3)}{x-((2*y)/3 + (34^(1/2)*y)/3)}
25 {x-(- 6^(1/2)/2 - 3/2)}{x-(6^(1/2)/2 - 3/2)}
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