How do you factor by grouping #x^3+5x^2-6x-30#?

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Answer 1 · 2015-04-11T01:59:10

Collect #x# between the first and third term and #5# between the second and fourth:
#x(x^2-6)+5(x^2-6)#
Collect #(x^2-6)# to get:
#(x^2-6)(x+5)#