What are the x-intercept(s) of the graph of y − 3 = x2 + 4x?

Question

campbell_st · Answer

rewrite the equation as 

$$y = x^2 + 4x  + 3$$

can you factorise this..?

campbell_st · Answer

to find the x- intercepts let y = 0 

then 

$$x^2 + 4x + 3 = 0$$

anonymous · Answer

but like isnt it a rule that a cant equal 0?

campbell_st · Answer

the rule for x intercepts is that y = 0.... 

you are finding the points on the x-axis.... this is where y is always equal to zero

anonymous · Answer

no. A cant equal zero... and it does in this equation

campbell_st · Answer

you let the equation equal zero 

$$x^2 + 4x + 3 = 0$$

so can you factorise

anonymous · Answer

@marmar3000 , if you're referring to the coefficients in the equation $\large y=ax^2+bx+c $, then in your equation a is not zero...

campbell_st · Answer

now you need to find the factors of 3 that add to 4