Factorization (x + y) ^ 2 + (x + y) - 20

RELATED INFORMATIONS

• 1. Factorization of 4 (x + y) 2 + 25-20 (x + y)
• 2. Using factorization to calculate the square of 34 + 34 * 32 + 16
• 3. If a, B, C and D are four collinear points, then the number of non-zero vectors obtained by taking them as the starting point and the ending point of the vector is zero_____ Ask you mathematical genius to help, to process, logical reasoning is OK, thank you
• 4. For a 200 meter long runway, each runway is 1.2 meters wide. How many meters should the starting point of the outer lane be moved forward?
• 5. The following is the schematic diagram of 200m runway, with its end point and starting point on the straight track. As the middle of the runway bypasses the semicircle, the starting point of the outer runway should be moved forward. If each runway is 1.2m wide, how many meters should the starting point of the outer runway be moved forward? (accurate to 0.1M)
• 6. Finding (2a + axb-3b) x (- a) with the module of vector a * b = 2. A as 1
• 7. Given the vector a = (x, - 1), B = (2,2), A.B = 0, then 2a-3b =?
• 8. 9. Given two points a (2,0,3) and B (1,2,4), the module, direction cosine and direction angle of vector AB are calculated
• 9. Three points a (2,4) and B (0, negative 3) C and (5,1), find the cosine value of the angle between the vector AB and AC
• 10. Given two points a (1,2,1), B (2, - 1,3), try to find the modulus and direction cosine of vector ab
• 11. Factorization (1) 16-24 (a + b) + 9 (a + b) ^ 2 (2) (X-Y) ^ 2-4 (x-y-1) (3) m (X-Y) ^ 2-x + y (4) 9 (a-b) ^ 2-16 (a + b) ^ 2
• 12. 1) - x ^ 4 + x ^ 2 y ^ 2) 3 [(a + b) ^ 2-9c ^ 2] 3) 16 (x + y) ^ 2-25 (X-Y) ^ 2 factorization
• 13. If a prime product and a composite product are 36 and 15, then the prime number is () and the composite number is ()
• 14. How to judge whether a number is prime or composite?
• 15. Is 269 a prime number or a composite number? What is the calculation idea? We already know that it's a prime number. We need to calculate the main idea
• 16. How to judge whether 269 is prime or composite
• 17. Are 269 and 493 combined or prime numbers
• 18. Judgment: the product of prime number and prime number must be composite number ()
• 19. Is 497111121111 prime or composite?
• 20. On what basis are composite numbers and prime numbers judged