What are the x-intercepts of $y=x^2+2x-15$ ?

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Answer 1 · 2014-10-26T21:50:48

By setting it equal to zero,

$x^2+2x-15=0$

by factoring out,

$(x+5)(x-3)=0$

by setting each factor equal to zero,

${(x+5=0 Rightarrow x=-5),(x-3=0 Rightarrow x=3):}$

Hence, the $x$ -intercepts are: $x=-5,3$ .

I hope that this was helpful.

What are the x-intercepts of y=x^2+2x-15y=x^2+2x-15?