Posted by Marissa on Tuesday, August 14, 2007 at 5:51pm.
1)Find the exact solutions to 3x^2=5x-1 using the quadratic formula.
answer=5 plus or minus the square root of 37 over 6
2)Use the discriminant to determine the number and type of roots for the equation 2x^2-7x+9=0
3)Identify the vertex,axis of symmetry,and direction of opening for y=1/2(x-8)^2+2
4)Which quadratic function has its vertex at(-2,7)and opens down?
5)Write y=x^2+4x-1 in vertex form
#1, watch your signs
3x^2 - 5x + 1=0
x=(5±√(25-12))/6 = (5±√(13))/6
#3, vertex is ok, but how can the axis of symmetry be x=-8?? Would it not go through the vertex?? So it is x=9 (always the same as the x of the vertex)
#4 yours opens UP
it should be y = -(x-2)^2+5
#5 no, it should be y=(x+2)^2-5
(why don't you expand your answer, it would not work)
Answer this Question
Maths - Solve for x (exact solutions): sin x - sin 3x + sin 5x = 0 ¦Ð ¡Ü x...
algebra - 1)What is the 4x^2=y^2+8y+32 answer= either hyperbola or parabola 2)...
Trig Equation - Solve for x (exact solutions): sin x - sin 3x + sin 5x = 0...
algebra help - I need help with this problem not understanding it. Give exact ...
algebra - Find all positive solutions to x^7 - 5x^4 = 3x^2 - 10
quadratic solutions - Find the solutions to each quadratic by factoring x^2+3x-...
algebra - Given f(x) = 5x2 – 3x + 1, find f(–2). so would this be 5(-2*-2) -3(-2...
algebra - Can someone help me solve this: Decide all values of b in the ...
Algebra - give exact and approximate solutions to three decimal places. x^2+5x-7...
algebra - give exact and approximate solutions to three decimal places. x^2+5x-7...