数学题(1)38.5²-36.5²(2)(2x-3y-1)(2x+3y+1)(3+1)(3^2+1)(3^4+1)(3^8+1)(3^16+1)抱歉是第一题38.5²-36.5² 第二题(2x-3y-1)(2x+3y+1)第三题(3+1)(3^2+1)(3^4+1)(3^8+1)(3^16+1)第四题200
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![数学题(1)38.5²-36.5²(2)(2x-3y-1)(2x+3y+1)(3+1)(3^2+1)(3^4+1)(3^8+1)(3^16+1)抱歉是第一题38.5²-36.5² 第二题(2x-3y-1)(2x+3y+1)第三题(3+1)(3^2+1)(3^4+1)(3^8+1)(3^16+1)第四题200](/uploads/image/z/325353-57-3.jpg?t=%E6%95%B0%E5%AD%A6%E9%A2%98%281%2938.5%26%23178%3B-36.5%26%23178%3B%282%29%EF%BC%882x-3y-1%EF%BC%89%EF%BC%882x%2B3y%2B1%EF%BC%89%EF%BC%883%2B1%EF%BC%89%EF%BC%883%5E2%2B1%EF%BC%89%EF%BC%883%5E4%2B1%EF%BC%89%283%5E8%2B1%29%283%5E16%2B1%29%E6%8A%B1%E6%AD%89%E6%98%AF%E7%AC%AC%E4%B8%80%E9%A2%9838.5%26%23178%3B-36.5%26%23178%3B+%E7%AC%AC%E4%BA%8C%E9%A2%98%EF%BC%882x-3y-1%EF%BC%89%EF%BC%882x%2B3y%2B1%EF%BC%89%E7%AC%AC%E4%B8%89%E9%A2%98%EF%BC%883%2B1%EF%BC%89%EF%BC%883%5E2%2B1%EF%BC%89%EF%BC%883%5E4%2B1%EF%BC%89%283%5E8%2B1%29%283%5E16%2B1%29%E7%AC%AC%E5%9B%9B%E9%A2%98200)
数学题(1)38.5²-36.5²(2)(2x-3y-1)(2x+3y+1)(3+1)(3^2+1)(3^4+1)(3^8+1)(3^16+1)抱歉是第一题38.5²-36.5² 第二题(2x-3y-1)(2x+3y+1)第三题(3+1)(3^2+1)(3^4+1)(3^8+1)(3^16+1)第四题200
数学题(1)38.5²-36.5²(2)(2x-3y-1)(2x+3y+1)(3+1)(3^2+1)(3^4+1)(3^8+1)(3^16+1)
抱歉是第一题38.5²-36.5² 第二题(2x-3y-1)(2x+3y+1)第三题(3+1)(3^2+1)(3^4+1)(3^8+1)(3^16+1)第四题2003^2-3001^2
数学题(1)38.5²-36.5²(2)(2x-3y-1)(2x+3y+1)(3+1)(3^2+1)(3^4+1)(3^8+1)(3^16+1)抱歉是第一题38.5²-36.5² 第二题(2x-3y-1)(2x+3y+1)第三题(3+1)(3^2+1)(3^4+1)(3^8+1)(3^16+1)第四题200
1.
38.5^2-36.5^2
=(38.5+36.5)(38.5-36.5)
=75*2
=150
2.
(2x-3y-1)(2x+3y+1)
=[2x-(3y+1)][2x+(3y+1)]
=4x^2-(3y+1)^2
=4x^2-(9y^2+6y+1)
=4x^2-9y^2-6y-1
3.
(3+1)(3^2+1)(3^4+1)(3^8+1)(3^16+1)
=(1/2)(3-1)(3+1)(3^2+1)(3^4+1)(3^8+1)(3^16+1)
=(1/2)(3^2-1)(3^2+1)(3^4+1)(3^8+1)(3^16+1)
=(1/2)(3^4-1)(3^4+1)(3^8+1)(3^16+1)
=(1/2)(3^8-1)(3^8+1)(3^16+1)
=(1/2)(3^16-1)(3^16+1)
=(1/2)(3^32-1)
=3^32/2-1/2
1:150
2:4x^2-9y^2-6y-1
3:9.265100944×10的14次方
(1).38.5²-36.5²=(38.5+36.5)(38.5-36.5)=75*2=150
(2).(2x-3y-1)(2x+3y+1)=(2x-(3y+1))(2x+(3y+1))=(2x)²-(3y+1)²=4x²-9y²-6y+1
(3).(3+1)(3^2+1)(3^4+1)(3^8+1)(3^16+1)
全部展开
(1).38.5²-36.5²=(38.5+36.5)(38.5-36.5)=75*2=150
(2).(2x-3y-1)(2x+3y+1)=(2x-(3y+1))(2x+(3y+1))=(2x)²-(3y+1)²=4x²-9y²-6y+1
(3).(3+1)(3^2+1)(3^4+1)(3^8+1)(3^16+1)
=0.5(3-1)(3+1)(3^2+1)(3^4+1)(3^8+1)(3^16+1)
=0.5(3²-1)(3²+1)(3^4+1)(3^8+1)(3^16+1)
=0.5(3^4-1)(3^4+1)(3^8+1)(3^16+1)
=0.5(3^8-1)(3^8+1)(3^16+1)
=0.5(3^16-1)(3^16+1)
=0.5(3^32-1)
收起
(38.5-36.5)*(38.5+36.5)=150
=4x²-(3y+1)²=4x²-9y²-6y-1
第三题我只会直接用计算机算
1、(38,5-36.5)*(38.5+36.5)=150
2、[2x-(3y+1)]*[2x+(3y+1)]=4x^2-(3y+1)^2
3、92651009442520