The two right sides of a right triangle are the two roots of the equation x-7x + 12 = 0 What is the radius of the circumcircle of this right triangle

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• 1. It is known that the lengths of two right angles of a right triangle are exactly the two roots of the equation 2x-3x-2 = 0 (1) The sum of the lengths of the two right angles of this right triangle (2) The area of this right triangle
• 2. 7 times 12 minus 3 x is equal to 24, the process of solving the equation is written completely
• 3. The product of 5 times a plus a minus 18 times 2 is equal to 139
• 4. It is known that z = I-1 is a root of the equation Z ^ 2 + ax + B = 0. 1) find the value of real numbers a and B. 2) conjecture the equation by combining WIDA's theorem And prove it
• 5. Let a and B be the two real roots of the equation x ^ 2-2x-4 = 0. Find a ^ 2 + 2B
• 6. It is known that AB is two parts of the equation x ^ 2-7x + 9 = 0 and a
• 7. Let the equation x 2 + (AX) 2-7x-7ax + 2A + 12 = 0 have two equal roots and find the value of A
• 8. The equation 5x-3 = 7x + 2 can be transformed into () a.5x+7x=2+3 b.-3-2=7x-5x c.5x-7x=2-3 d.3-2=7x-5x
• 9. The following equation is transformed into 5x-2 = 7x + 8, and the result is as follows 5x-2 = 7x + 8, we get 3x + 20 = 4x-25 1-3 / 2x = 3x + 5 / 2
• 10. If the solution of equation 5x + 10 / 3 = 0 is the same as that of equation 3x + a whose absolute value = - 1, then what is a? (use the solution of equation) If the solution of equation 5x + 10 / 3 = 0 is the same as that of equation 3x + a whose absolute value = - 1, then what is a? (use equation solution)
• 11. Given that the lengths of two sides of a right triangle are two of the equations x2-7x + 12 = 0, then the length of the third side is______ ．
• 12. If the equation 6x + 5y-2 on X Y is the same as 3rx-2ry + 4R = 0, and there is no y term after merging the class term, the value of R can be obtained
• 13. If the equation 6x + 5y-2-3rx-2ry + 4R = 0 about X and Y does not contain y term after merging the similar term, the value of R is obtained
• 14. It is known that (M2-1) X2 - (m-1) x + 8 = 0 is a linear equation of one variable with respect to x, and its solution is n (1) Find the value of the algebraic formula 200 (M + n) (n-2m) - 3M + 5 (2) Finding the solution of the equation m y = n about y
• 15. The equation (m-1) x + (m-1) y = 0 is a bivariate linear equation when m =? And a univariate linear equation when m =
• 16. If the equation (m ^ 2-1) x ^ 2 - (m-1) x + (2m + 1) Y-3 = 0 is a bivariate linear equation, then the value of M is (if the equation is a univariate linear equation, then the value of M is?
• 17. The equation (M & # 178; - 4) x & # 178; + (M + 2) x + (M + 1) y = m + 5 about X is known? (2) What is the value of M?
• 18. When m is a value, the equation (M & # 178; - 1) y & # 178; + (M + 1) y + (M + 4) x = m + 3 is a univariate linear equation. When m is a value, the original equation is a bivariate linear equation
• 19. On the equation of X (M2 - 4) x & # 178; + (M + 2) x + (M + 1) y = m + 5, when m = is a one variable linear equation, when m = is a two variable linear equation
• 20. Mathematics -- solving higher order equation of one variable The third power of X - the square of 3x + X + 2 = 0 Let f = (x) = the third power of X - the square of 3x + X + 2 ∵f(2)=8-3*4+2+2=0 X-2 is a factor of the square + X + 2 of the cubic power - 3x of polynomial X (I understand here) The original equation can be solved as: (X-2) (the square of x-x-1) = 0 (I want to know how to push this step out and how to get the result at once. I hope you can give me a detailed and understandable answer.)