Using factorization to solve a problem (1-1/2^2 )(1-1/3^2 )(1-1/4^2 )^…… (1-1 / N ^ 2) use factorization to solve this problem

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• 1. A problem of factorization X^2-4
• 2. A question about factorization? What can n (n + 1) (n + 2) (n + 3) + 1 be decomposed into?
• 3. Factorization of a problem in grade one of junior high school （x-2y）x^3-（y-2x)y^3
• 4. x²-4xy-1+4y²= 7.77²+4.46×7.77+2.23²= There must be a process. Let's go, brothers
• 5. (1) The square of X - some square - x + 1 / 4 (2) The fourth power of X is the square of - 2x and the square of Y + 1 (3) Square of (x + y) - 4 (x + Y-1) (4) The square of 4x - the square of 6xy + 9y (5) The square of X + the square of 2XY + - y
• 6. Known: x square - x = 1, y square - y = 1 and X ≠ y, find x square + 2XY + y square Find the digital value of x square + 2XY + y square
• 7. There are questions about factorization in grade one of junior high school （1）a²+（2b-3）a+b²-3b+2 (2) 9 to the power of N - 3 to the power of (n + 2) - 10 Like [the fourth power of X - 3 times the square of X + 1] （1）a²+（2b-3）× a+b²-3b+2
• 8. 1. Factorization: (2 times of X + 2x) (2 times of X + 2x-2) - 3 2. If a and B are integers, and the degree 2-x-1 of X is a factor of the degree 3 of AX + the degree 2 + 1 of BX, find the value of B 3. Find the minimum value of the second power of 4x - x + 3 Quick return,
• 9. Several factorization problems in grade one of junior high school 1.（x-y)²+4xy 2.(x-1)(x-2)-2(2-x)² 3.(a²+ab+b²)²-9a²b²
• 10. Who can work out some factorization problems in grade one of junior high school
• 11. Factorization and factorization what's the difference between factorization and factorization
• 12. Solving 20 factorization problems X^3-X^2+X-1 AX+AY+X+Y 5MA+5MB-A-B M^2-MN-5M+5N A^2-B^2-2A+2B M^2-N^2+2M+2N AX^2-A^3-2AX-2A^2
• 13. 4 questions 20 points Oh factorization 1-3(x-y)+3(x-y)^2-(x-y)^3 a^2+b^2+4a-4b-2ab+4 (x+y)^2+ (x+m)^2-(m+n)^2-(y+n)^2 a^2(b^2-c^2)-c^2(b-c)(a+b)
• 14. Several simple factorization problems~ (1) (2x-3y)^2 - 4a^2 (2) x^4 - 2x^2 + 1 (3) x^2 - a^2 - 2x - 2a (4) 4x^2 - 4xy + y^2 - a^2 (5) (x + y)^2 - 2(x + y ) - 3 (6) x^2 - 2xy -3y^2 + x + y
• 15. A factorization problem in grade one of junior high school (3x-1)(2x+3)-(x+3)(x-3)
• 16. Factorization test questions x(x+y-z)+y(x+y-z)+z(z-x-y)
• 17. Factorization: 1、6q(p+q)-4p(p+q) 2、x(x-y)^2-y(x-y)^2 3、x(x+y)(x-y)-x(x+y)^2
• 18. As shown in the figure, in the quadrilateral ABCD, the angle B = 90 ° AC ⊥ DC, ab = 1cm, BC = DC = 2cm, then ad=_____ cm
• 19. A few biology fill in the blanks Animal cells and most plant cells, the outside of the nucleus is coated with (), and there is a clear boundary between (). Such cells are called eukaryotic cells. Organisms with eukaryotic cells are called (). Some biological cells do not have formed cell nuclei, that is, cells and () are not coated, and there is no obvious boundary between () and (), Such cells are called prokaryotes. Organisms made up of prokaryotes are called ()
• 20. A right angled trapezoid has an upper base of 8 cm and a lower base of 15 cm. Cut out the largest triangle in the right angled trapezoid, and the remaining area is 37.8 square cm Q: what is the area of the original trapezoid?