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Given 3A + B = 10000, 3a-b = 0.00001, find the value of B & # 178; - 9A & # 178
b²-9a²
=(b-3a)(b+3a)
=-0.00001*10000
=-0.1
RELATED INFORMATIONS
- 1. Calculation (1 / 3A & # 178; B ^ 3) (- 15A & # 178; B & # 178;)
- 2. It is known that the length of the hypotenuse ab of the triangle ABC is √ 5, and the lengths of the two corners are the two real roots of the quadratic equation of one variable χ & # 178; - (2a + 1) χ + 2A = 0
- 3. What's the answer to a & # 178; + 2A?
- 4. 2.5678/0.88=
- 5. 1234+5678×2÷1+100=?
- 6. 5678 to 0.01
- 7. If (M & # 178; + n & # 178;) (M & # 178; + n & # 178; - 1) = 6, then M & # 178; + n & # 178; =? If X & # 178; - 2x-2 = (X & # 178; - 4x + 3)
- 8. If A-B = 2, a-c = - 1, then the square of (2a-b-c) + the square of (C-B) is ()
- 9. The square of a = 2A · a may be () a.0 B.1 C.2 D.3
- 10. If a = - 2, a + B + C = - 2.8, find the value of the square (- B-C) - 3.2a (c + b) of the algebraic formula a?
- 11. For any non-zero natural number a, B, a ⊗ B = 2 × a + B, if a ⊗ 2A ⊗ 3a ⊗ 4A ⊗ 5A ⊗ 6a ⊗ 7a ⊗ 8A ⊗ 9A = 3039, find a=______ ．
- 12. When a = 2012, finding the algebraic formula (5a & # 178; - 2A & # 178; + 3a-1) can be sloppy. Xiao Ming copied the known condition to a = 2102, and then the answer is still right, What's going on? Can you tell me why?
- 13. 2a of 5A ^ 2B + 3b of 10ab ^ 2
- 14. 10ab-3 + 6b-5a = (10ab-5a) - 3 () fill in the brackets
- 15. Decomposition factor 2A & # 178; - 2Ab, 3AB & # 178; + A & # 178; b
- 16. 5ab & # 178; - 6 [3 / 2A & # 178; B-2 / 3 (4a & # 178; B + 2Ab & # 178;)] where a = 1, B = - 1
- 17. 5ab & # 178; - {2A & # 178; B-3 [AB & # 178; - 2 (2Ab & # 178; + A & # 178; b])}, where a and B satisfy | a + 1 | + (b-2) &# 178; = 0
- 18. The simplification process of the following integral format (2a & # 178; b-5ab) - 2 (- AB-A & # 178; b) is simplified The reduction process of (2a & # 178; b-5ab) - 2 (- AB-A & # 178; b) 1-3 (x-1 / 2Y & # 178;) + (- x + 1 / 2Y & # 178;) reduction process (- X & # 178; y + 3xy-4) + 3 (X & # 178; y-xy + 2) reduction process -1 / 4 (2k & # 179; + 4K & # 178; - 28) + 1 / 2 (K & # 179; - 2K & # 178; + 4K) reduction process 3x & # 178; - (2x & # 178; + 5x-1) - (3x + 1) where x = 10 is the simplification process (xy-3 / 2y-1 / 2) - (xy-3 / 2x + 1) where x = 10 / 3, y = 8 / 3 It will be handed over to the teacher tomorrow
- 19. 3A * 4A = 12a ^ 2, right? If 4 * 4A = how much?
- 20. 3A + (- 8A + 2) - (3-4A) where a = - 2 / 1