anonymous
  • anonymous
Algebra 1 9th grade PLEAS EXPLAIN Find the x-intercept of the parabola y=x2+2x-15 using ant representation you prefer. Then explain your method.
Mathematics
  • Stacey Warren - Expert brainly.com
Hey! We 've verified this expert answer for you, click below to unlock the details :)
SOLVED
At vero eos et accusamus et iusto odio dignissimos ducimus qui blanditiis praesentium voluptatum deleniti atque corrupti quos dolores et quas molestias excepturi sint occaecati cupiditate non provident, similique sunt in culpa qui officia deserunt mollitia animi, id est laborum et dolorum fuga. Et harum quidem rerum facilis est et expedita distinctio. Nam libero tempore, cum soluta nobis est eligendi optio cumque nihil impedit quo minus id quod maxime placeat facere possimus, omnis voluptas assumenda est, omnis dolor repellendus. Itaque earum rerum hic tenetur a sapiente delectus, ut aut reiciendis voluptatibus maiores alias consequatur aut perferendis doloribus asperiores repellat.
schrodinger
  • schrodinger
I got my questions answered at brainly.com in under 10 minutes. Go to brainly.com now for free help!
anonymous
  • anonymous
\[y=x ^{2}+2x-15\] This is what the equation looks like
KingGeorge
  • KingGeorge
Well, the first step is to set it equal to 0\[0=x^2+2x-15\]Then, you have to factor the equation. Since you have a 1x^2, you;r factorization must look like\[(x+ \text{__})(x+ \text{__})\]where you fill in the blanks with two numbers that multiply to -15 and add to 2. After some quick guess and check, we find that \[5*{-3} = 15, \qquad 5-3 = 2\]so the factorization is\[0=(x+5)(x-3)\]Therefore, one of the following is true if it intercepts the x-axis.\[\begin{matrix} 1. & x+5=0 \\ 2. & x-3=0 \end{matrix}\]Therefore, the x-intercepts are at (-5, 0) and (3, 0). Hope this helps clear up how to do this sort of problem.
anonymous
  • anonymous
Thanks(:

Looking for something else?

Not the answer you are looking for? Search for more explanations.