(x^2+1)-7(x^2+1)+10 (x^2+5x)(x^2+5x-2)-24 (a+1)^2+2(a+1)-8
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(x^2+1)-7(x^2+1)+10 (x^2+5x)(x^2+5x-2)-24 (a+1)^2+2(a+1)-8
(x^2+1)-7(x^2+1)+10 (x^2+5x)(x^2+5x-2)-24 (a+1)^2+2(a+1)-8
(x^2+1)-7(x^2+1)+10 (x^2+5x)(x^2+5x-2)-24 (a+1)^2+2(a+1)-8
(x^2+1)-7(x^2+1)+10
=(x²+1-2)(x²+1-5)
=(x²-1)(x²-4)
=(x-1)(x+1)(x-2)(x+2)
(x^2+5x)(x^2+5x-2)-24
=(x²+5x)²-2(x²+5x)-24
=(x²+5x-6)(x²+5x+4)
=(x+6)(x-1)(x+1)(x+4)
(a+1)^2+2(a+1)-8
=(a+1+4)(a+1-2)
=(a+5)(a-1)
1)(x^2+1)-7(x^2+1)+10
=[(x^2+1)-2][(x^2+1)-5]
=(x^2-1)(x^2-4)
=(x-1)(x+1)(x-2)(x+2)
2)(x^2+5x)(x^2+5x-2)-24
=(x^2+5x)^2-2(x^2+5x)-24
=[(x^2+5x)+4][(x^2+5x-6]
=(x+1)(x+4)(x-1)(x+6)
3)(a+1)^2+2(a+1)-8
=[(a+1)-2][(a+1)+4]
=(a-1)(a+5)
(x^2+1)-7(x^2+1)+10
=(x²+1-2)(x²+1-5)
=(x+1)(x-1)(x+2)(x-2)
(x^2+5x)(x^2+5x-2)-24
=(x²+5x)²-2(x²+5x)-24
=(x²+5x-6)(x²+5x+4)
=(x-1)(x+6)(x+1)(x+4)
(a+1)^2+2(a+1)-8
=(a+1+4)(a+1-2)
=(a+5)(a-1)
貌似式子中(x^2+1)-7(x^2+1)+10 第一个括号少了个平方哈!
应该是:(x^2+1)²-7(x^2+1)+10 !
如果是,解题如下:
(x^2+1)-7(x^2+1)+10
=[(x²+1) - 2]*[(x²+1)-5]
=(x²-1)(x²-4)
=(x+1)(x-1)(x+2)...
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貌似式子中(x^2+1)-7(x^2+1)+10 第一个括号少了个平方哈!
应该是:(x^2+1)²-7(x^2+1)+10 !
如果是,解题如下:
(x^2+1)-7(x^2+1)+10
=[(x²+1) - 2]*[(x²+1)-5]
=(x²-1)(x²-4)
=(x+1)(x-1)(x+2)(x-2)
(x^2+5x)(x^2+5x-2)-24
=(x²+5x)²-2(x²+5x)-24
=[(x²+5x)-6]*[(x²+5x)+4]
=(x²+5x-6)(x²+5x+4)
=(x-1)(x+6)(x+1)(x+4)
(a+1)^2+2(a+1)-8
=[(a+1)-2]*[(a+1)+4]
=(a-1)(a+5)
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