Take 4 out of 6 cases, multiply the numerator and denominator by 3 at the same time, and divide the denominator by 2 and the numerator by 2

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• 1. [1.] the denominator of a fraction remains unchanged. If the numerator is multiplied by 5, how does the size of the fraction change? If the numerator remains unchanged and the denominator is divided by 5· [1.] the denominator of a fraction remains unchanged. If the numerator is multiplied by 5, how does the size of the fraction change? If the numerator remains unchanged and the denominator is divided by 5
• 2. Who told me how to solve the square root equation, for example: x ^ 2 = 36
• 3. Use the square root to solve the equation （1）X² + 1 = 1.01 （2）4X² - 25 =0 Given that AB is a real number, and the root sign a-5-2, root sign 10-2a = B + 4, find the value of a-b
• 4. For the solution of square root equation, if it is fast, give another 5 points. The topic is: the first (x-1) square = 289, the second (3x-1) square = 25
• 5. What is (√ 18 - √ 1 / 2) × √ 8? Problem solving process~
• 6. (2-1)(1+2+2²+2³+…… +2 62nd power + 2 63rd power =?
• 7. Find the solution of X multiplied by 50 / 2-x equal to 300
• 8. What is the monotone decreasing interval of the function y = x Λ 2-2x + 3?
• 9. What are the least common multiple, greatest common factor and least common multiple of 12, 54 and 72?
• 10. If we know that the power of X + X + 1 / x = 1 / 4, then the power of 3x is 5x / 4 - 15x + 5=
• 11. Let the integer part of (5-radical 5) be a and the decimal part be B, then a-b=___
• 12. Let the integral part of 1 (3 - √ 5) be a and the decimal part be B. find A-1 / b
• 13. Let the fractional part of 5 - √ 3 be a and the integral part be B, then a = (), B = ()
• 14. Given that the integral parts of 3 + 5 and 3-5 are a and B respectively, then a + B = 1___ ．
• 15. Let the integer part of root 7 be a and the decimal part be B, and find the value of B (a + root 7)
• 16. The decimal part of root 2 is a, and the decimal part of root 8 is B. find AB + A + B ∵ radical 9
• 17. Given that the decimal parts of 6 + radical 11 and 6 - radical 11 are a and B, find the value of ab
• 18. Given that a is the integral part of √ 13 and B is the fractional part of √ 13, find the value of A-B?
• 19. Given that the integer part of 3 + √ 5 is a and the decimal part is B, then B (√ 5 + 2)=---------
• 20. Given that a is the integral part of √ 8 and B is the fractional part of √ 8, find the value of (- a) 3 + (B + 2) 2