# Questions on Algebra: Radicals -- complicated equations involving roots answered by real tutors!

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 Algebra: Radicals -- complicated equations involving roots Solvers Lessons Answers archive Quiz In Depth

 Question 340744: Solve the radical equation, and check ALL proposed solutions: sqrt(x+6) + sqrt(2-x) = 4 Answer choices: A.) {2, -2} B.) {0} C.) {sqrt(31), -2} D.) {-2} Thanks! Click here to see answer by Sphynx pinastri(7)

 Question 343819: I do not know how to do this equation. I need help getting the solution. Click here to see answer by Alan3354(30993)

 Question 344059: Solve by multiplying both side by the LCD. x+3/x-1 + x+4/x+1 = 8x+5/x^2-1 My Work: (x+1)(x+3)+(x-1)(x+4)=8x+5 2x^2-7x-1=8x+5 2x^2-15x-6=0 no solution Is this correct please help thanks Click here to see answer by Fombitz(13828)

 Question 344081: what is the square root of 45 plus the square root of 5 times 2? Click here to see answer by checkley77(12569)

 Question 344326: Hi, How do you solve: x^3 - 2x^2 + 9x - 18 = 0 the teacher has given us one solution, 3i/square root of -9. i need two other solutions and am not sure how to obtain them. i have tried rational root theorem/ long division but do not know how to do it with square roots and imaginary numbers. thanks Click here to see answer by Fombitz(13828)

 Question 344499: how do i rewrite the following with rational exponents? ^3√xy^2z Click here to see answer by Fombitz(13828)

 Question 344497: Applications We can determine the time it would take an object to fall (if there were no air resistance) by using the formula t=1/4√d where d is the distance A. how long does it take a quarter dropped from a 35foot roof to reach the ground? B. If there are 5280 feet in one mile, how long would it take an object to fall 1-1/2 miles? C. If it takes an object 5.9 seconds to fall d feet, how tall is the object? I tried sloving with a graphic calculator but I am not certain on how to show work. Please help Click here to see answer by Alan3354(30993)

 Question 344740: Hello, I am in Geometry, and we are required to use algebra to solve for angles and measures. But I've stumbled upon something I have forgotten in algebra. Your help would be greatly appreciated. Here's the problem: 9x^2 + x - 1 = x^2 + x + 7 I have already managed to do this: 9x^2 + x - 1 = x^2 + x + 7 8x^2 + x - 1 = x + 7 8x^2 - 1 = 7 8x^2 = 8 *This is where I get stuck. How do I get rid of the x squared so all i'm left with is the value of x? Click here to see answer by scott8148(6628)

 Question 344858: If a projectile is launched with an initial velocity of v0 feet per second from an initial height of s0 feet, then its height s(t)in feet is determined by the quadratic function s(t)=-16t^2+v0^t+s0 where t is the time in seconds. When you graph the function you will have the parabolic shape where the maximum point is called the vertex. If a ball is tossed upward with velocity 64 feet per second from a height of 5 feet, the function to represent the height at any time t is given with the equation s(t)=-16t^+64t+5 Click here to see answer by stanbon(57323)

 Question 345667: p^2+7p+12>o.....this is what i got p>-4....p>-3 i try to graph it the answer given to us is <-------)-4 -3(----------> if i get >-4 >-3 why is the answer <-4 >-3 Click here to see answer by scott8148(6628)

 Question 345941: 3 times sqrt (100x^2) OVER 2 times sqrt (2x^-1) (it's a fraction equation and we are supposed to use the quotient rule and simplify if possible) thank you so much for any help Click here to see answer by Alan3354(30993)

 Question 345955: Write in simplified radical form by rationalizing the denominator. root 3-2 over -5 root 3+8 Click here to see answer by jsmallt9(3296)

 Question 346195: Please explain the steps on how to find the domain of 27x + 1 over the square root of 3 - x. Thank you Click here to see answer by Fombitz(13828)

 Question 346781: hi i need help with the problem "100v power to 3 Click here to see answer by Fombitz(13828)