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The ratio of 8:25 to 2:3 becomes the simplest integer ratio (). The ratio of this ratio is () (detailed process) Do you have anything more detailed? First floor, I don't understand
8/25：2/3=24/75：50：75=12：25=0.48
(7.7 4-3.8 5 + 9.9 4) + (10.7 3-4.9 4-5.8 3) what is the formula? Add experience!
And this: 43 out of 97 by 99 help!
Professional teachers will answer for you. (knowledge is power!) (7.7 4-3.8 5 + 9.9 4) + (10.7 3-4.9 4-5.8 3) = (7.7 4 + 10.7 3) - (3.8 5 + 5.8 3) + (9.9 4-4.9 4) = 18-9 + 5 = 9
1 / 7-8 = 0.8 * 1 / 9 = (without formula)
1 out of 7-8 = 55 out of 8
The ratio of 8:25 to 2:3 is the simplest integer ratio (), and the ratio of this ratio is ()
The simplest integer ratio is (12:25), and the ratio is (12 / 25)
What is the simplest integer ratio of 8 / 25 to 2 / 3
8 / 25 vs. 2 / 3
=8/25*75：2/3*75
=24：50
=12：25
Their ratio is 0.48
2 / 3 to 8 / 9 becomes the simplest integer ratio and ratio
2 / 3: 8 / 9
=(2 / 3 × 9): (8 / 9 × 9)
=6:8
=（6÷2）：（8÷2）
=3:4
The ratio is 2 / 3 / 9 / 8 = 3 / 4
If x and y are the integral part and the fractional part of √ 5 respectively, then the value of 2XY + Y & # is——
x. Y is the integral part and the decimal part of √ 5 respectively
x=2,y=√5-2
2xy+y²
=2×2×(√5-2)+(√5-2)²
=4√5-8+5+4-4√5
=1
If the integer part of root 10 is x and the decimal part is y, then the value of X & # 178; - Y & # 178; is
x=3,y=√10-3
x²-y²=3²-(√10-3)²=9-10+6√10-9=6√10-10
Given that X & # 178; - Y & # 178; = 20 and X + y = 5, then the value of X-Y
Use the formula of square difference or the formula of complete square to change
x^2-y^2=(x+y)(x-y)=20
X + y = 5
We get X-Y = 4
Let the integral part of 23 be x, and the decimal part be y, and find the value of x2-y2
∵ 9 ＜ 12 ＜ 16, ∵ 3 ＜ 12 ＜ 4, that is, 3 ＜ 23 ＜ 4, ∵ x, y are the integral part and decimal part of 23 respectively, ∵ x = 3, y = 23-3, ∵ x2-y2 = 32 - (23-3) 2 = 9 - (12-123 + 9) = 123-12
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