Find the solutions to the equation (check all that apply) x2+14x+48=0.
a.x=-2
b.x=1/2
c.x=2
d.x=-1/2
e.x=3
f.x=3/2

Question

anonymous · Answer

try plugging each value into the function until you find one that makes it true

anonymous · Answer

the equations's the same as the last problem, but the choices are different...are you sure about that equation?

anonymous · Answer

I just need help and the equation is wrog its 4x2+4x+1=0

anonymous · Answer

a little trick on factoring...some forms afe nicer than others.

$$(ax+b)^{2}=a^{2}x^{2}+2abx +b^{2}$$

since your first term is a perfect square and your last term is a perfect square, it's a good candidate.

anonymous · Answer

if it works, then a=2 and b=1.  so the question is, does 2ab=4?  if so, then your factored form would be $$(ax+b)^{2}$$where a=2 and b=1

anonymous · Answer

2(2)(1)=4...you're in luck

anonymous · Answer

so, your factored form is $$(2x+1)^{2}=(2x+1)(2x+1)=0$$

so now solve the same as last problem.