Given the root 6a-12 + (2B + 2) square + / 6-4c / = 0, find the value of 2abc

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• 1. If a > b > 0 > C, a + B + C = 0, and | B + 1 | = | C + 1 |, find the value of - a square + 2b-c - (a-4c-b) |B + 1 | = | C + 1 |, B + 1 = - C-1, B + C = - 2 If a + B + C = 0, then a = 2 So: -Square a + 2b-c - (a-4c-b) =-a^2+2b-c-a+4c+b =-a^2-a+3(b+c) =-4-2-6 =-12
• 2. A + B + C = 0 and the distance between B and - 1 is equal to the distance between C and - 1, find the square of a + 2b-c - (a-4c-b)
• 3. A < 2B B < 3C C < 4D d < 50A the maximum value is? A1157 b1167 c1191 d1169
• 4. If ABCD is a four digit number and ABCD + A + 2B + 3C + 4D = 2011, what is ABCD?
• 5. 5. If a, B, C, D are all integers, and the equation (a-2b) x = 1, (b-3c) y = 1, (c-4d) z = 1, W + 100 = D has positive integer solutions x, y, Z, w respectively, then the minimum value of a is___
• 6. Suppose that a, B, C and D are four constants. Here are four equations: (a-2b) x = 1, (b-3c) y = 1, (c-4d) z = 1, W + 100 = D, What are the minimum values of X, y, Z and W respectively
• 7. The first formula of quaternion equation is a: B: C: D = 2:3:4:5, and the second formula is a + 2B + 3C + 4D = 1 How much is ABCD?
• 8. 3A + 2B + C = 5,2a + b-3c = 1,3a + b-7c = m, a, B and C are expressed by algebraic expressions containing m respectively
• 9. It is known that a, B and C are all integers. When the value of the algebraic formula 7a + 2B + 3C can be divisible by 13, can the value of the algebraic formula 5A + 7b-22c be divisible by 13? Why?
• 10. 70 square decimeters equals () square meters fill in the simplest score
• 11. In the triangle ABC, BC = 2Ab, ∠ ABC = 2 ∠ C, BD = CD Point D is on BC
• 12. In the triangle ABC, BC = 2Ab, ∠ ABC = 2 ∠ C, BD = CD
• 13. Given a, B, C ∈ R +, prove: A ^ 12 / BC + B ^ 12 / Ca + C ^ 12 / AB > = a ^ 10 + B ^ 10 + C ^ 10, use sorting inequality to solve
• 14. As shown in the figure, in △ ABC, ab = AC, D and E are on the sides of BC and AC respectively, and ∠ 1 = ∠ B, ad = de. verify: △ ADB ≌ △ Dec
• 15. In the triangle ABC, D is a point on the edge of BC, e is a point on the edge of AC, and satisfies ad = AB, angle ade = angle C 1. Prove the angle Dec = angle B 2 prove the square of AB = aexac
• 16. In the triangle ABC, D is a point on the side of BC, e is a point on AC, and satisfies ad = AB, angle ade = angle C 1. Prove the angle Dec = angle B 2 prove the square of AB = aexac
• 17. In △ ABC, ∠ C = 90 °, AC + AB = 30, ∠ a - ∠ B = 30 °, then BC = --
• 18. Given the line segment AB, extending AB to C is BC = 1 / 3AB, and D is the midpoint of AC. if DC = 4cm, then the length of AB is Come on, come on, come on Given the line segment AB, take a point C on the extension line of AB, which is BC = 2Ab, and then add a point D on the extension line of Ba, so that Da = AC, then add 100 in 30 minutes
• 19. Given the line segment AB = 2cm, extend AB to point C to make AC = 3AB, and extend AB to point d reversely to make ad = 1 / 2Ab. Find the fraction of line segment BD to BC
• 20. Given the line segment AB = a, extend AB to point C so that BC = 1 / 3AB and point D is the midpoint of line segment AC. (1) find the length of CD. (2) if BD = 2 cm, find the length of ab .______ .___ ._. a d b c