anonymous
  • anonymous
x^2+7x+10=y solve quadratic formula
Algebra
  • Stacey Warren - Expert brainly.com
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SOLVED
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chestercat
  • chestercat
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anonymous
  • anonymous
what does a=? b=? c=? In this problem?
anonymous
  • anonymous
it doesn't say
anonymous
  • anonymous
I know it doesnt you have to figure it out by looking in the problem.

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anonymous
  • anonymous
oh. c=-10? and b=7x?
anonymous
  • anonymous
c is going to be positive so you only have to change the sign. b is the number next x in 7x we only want the number not the letter. a is the number next to x^2 hint for this one: it's not 2 because thats the exponent we want the number left of x since in this case we have no number what will it be?
anonymous
  • anonymous
1
anonymous
  • anonymous
yeah you are correct a=1 b=7 c=10
anonymous
  • anonymous
Now plug those numbers in for \begin{array}{*{20}c} {x = \frac{{ - b \pm \sqrt {b^2 - 4ac} }}{{2a}}} & {{\rm{when}}} & {ax^2 + bx + c = 0} \\ \end{array}
anonymous
  • anonymous
\[\pm \] this signs means you have to do it two times. Once when that sign becomes + and the other is when you replace it with + that sign means plus and minus
anonymous
  • anonymous
\[-7\pm \sqrt{?}\]
anonymous
  • anonymous
9/2

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