anonymous
  • anonymous
Which equation is a quadratic equation? y + 7 = −3x(4 − x) + 9x y = −2x + 5 y + 2x3 = (2x − 2)(x + 5) y − 9x = (x2 + 1)(5x − 1) + 3
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.
chestercat
  • chestercat
I got my questions answered at brainly.com in under 10 minutes. Go to brainly.com now for free help!
dan815
  • dan815
|dw:1377841704074:dw|
dan815
  • dan815
if u can rewrite it in something silimiar to that
anonymous
  • anonymous
Well its really hard

Looking for something else?

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

More answers

dan815
  • dan815
this question just wants you to do some simplification ill help ya out
dan815
  • dan815
where are you stuck
anonymous
  • anonymous
all of them
dan815
  • dan815
okay lets look at some, some are pretty obvious
dan815
  • dan815
y = −2x + 5 is the equation of a ?
anonymous
  • anonymous
-2x
dan815
  • dan815
its an equation of a line right
dan815
  • dan815
there no x^2 in this one... so it cant be a quadratic
dan815
  • dan815
quadratic just means it looks like a parabola
dan815
  • dan815
y + 2x3 = (2x − 2)(x + 5)
dan815
  • dan815
simplify that one
dan815
  • dan815
first of all there is a x^3 in there that means its a cubic
anonymous
  • anonymous
okay
dan815
  • dan815
okay try to reason through the other 2 cases now
anonymous
  • anonymous
a=2x a=9x
dan815
  • dan815
expand a out
dan815
  • dan815
y + 7 = −3x(4 − x) + 9x
dan815
  • dan815
see if you can write it in y=ax^2+bx+c form
dan815
  • dan815
where a b c are some constants
anonymous
  • anonymous
any equation is said to be quadratic if and only if it has a second order exponent in the above question 1st option is a quadratic equation as it has x^2 term 2nd is a linear one because it has only x^1 term as its highest degree term 3rd is a quadratic again because it has x^2 term and last one is a cubic equation for it has x^3 term
dan815
  • dan815
3rd is a cubic
dan815
  • dan815
but yes expand A out and see which it has to be a quadratic
anonymous
  • anonymous
so its A
dan815
  • dan815
yes
anonymous
  • anonymous
Faster please

Looking for something else?

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