SOLUTION: Give exact and approx to 3 dec.pts. for x^2-7x+5=0: value of x,x^2+50=10: would I be right to factor this one first? m^2-1/2m=7/2 complete the square. I have no idea even how to st

Algebra ->  Quadratic Equations and Parabolas  -> Quadratic Equation Customizable Word Problems -> SOLUTION: Give exact and approx to 3 dec.pts. for x^2-7x+5=0: value of x,x^2+50=10: would I be right to factor this one first? m^2-1/2m=7/2 complete the square. I have no idea even how to st      Log On


   

Question 329116: Give exact and approx to 3 dec.pts. for x^2-7x+5=0: value of x,x^2+50=10: would I be right to factor this one first? m^2-1/2m=7/2 complete the square. I have no idea even how to start this one.f(x) 9x^2+12x+4 find x and y intercepts, 3x^2=2 solve for x and give x and y intercepts. I know not to factor this one but am lost as to what's next.
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
Every quadratic equation of the form ax%5E2%2Bbx%2Bc=0 can be solved using the quadratic formula,
x+=+%28-b+%2B-+sqrt%28+b%5E2-4%2Aa%2Ac+%29%29%2F%282%2Aa%29+
Some can be factored, some are easy to complete the square, but every quadratic equation can be solved with the quadratic formula.
That's usually the place to start when you don't know where to start.