What are the x-intercepts of the function f(x)=x^2+3X-4? and can you show how to work it please?

Question

What are the x-intercepts of the function f(x)=x^2+3X-4?   and can you show how to work it  please?

precal · Answer

factor it or use the quadratic formula

anonymous · Answer

could you please give me a little more information than that???  HOW???  NEW TO THIS!!!!

precal · Answer

do you know how to factor?

anonymous · Answer

could you walk me through this please?

precal · Answer

ok what two things can you multiply to get x^2?

precal · Answer

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anonymous · Answer

is the answer -4,1

precal · Answer

that is not helping you, I thought we were going to do the entire problem
what two things do you multiply to get x^2
-4 times 1 is not x^2

anonymous · Answer

2,4

precal · Answer

sorry, perhaps someone else can help you

anonymous · Answer

that's okay precal, you PM me that you have a life, sorry to have bothered you!!!

precal · Answer

no bother but I have to go soon and it would be nice if you responded to my questions.  I have been helping 3 other people while I have awaited your response to what two things do you multiply to get x^2

rob1525 · Answer

The easiest way to find the x intercepts of a quadratic is to use to quadratic formula. The form is$$x=(-b \pm \sqrt{b^2-4*a*c})/2*a$$. So the quadratic has the form ax^2+bx+c. so your function is f(x)=1x^2+3X-4 so a=1 b=3 and c=-4. Now plug these values into the quadratic fromula and you'll get the x intercepts.

precal · Answer

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