Question

Grouping Method!

5x^2-25x-60

Answer 1

My teacher only wants the grouping method... thats the problem.

Answer 2

Yes, but it doesnt fit for this equation... Ill post it.

Answer 3

http://www.jamesbrennan.org/algebra/polynomials/factoring_by_grouping_.htm

Answer 4

After Grouping : \[[x -( 5-\sqrt{73}/2)][x -(5+\sqrt{73})/2] = 0 \]
But this method is inconvenient for this question!

Answer 5

Thank You!

Answer 6

welcome

Answer 7

You cannot use grouping method for this. You can use it only if it +60 not -60.

Answer 8

Use Feynman Algorithm : Write down the problem,Try real hard,Write down the solution