How do you factor the trinomial #a^2-11ab-60b^2#?

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How do you factor the trinomial #a^2-11ab-60b^2#?

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Answer 1 · 2018-03-03T15:32:13

#(a+4b)(a-15b)#

Explanation:

Note:#color(blue)((-15)+(4)=-11and(-15)*(4)=-60)#
So,
#a^2-color(red)(11ab)-60b^2=a^2color(red)(-15ab+4ab)-60b^2#
#=acolor(red)((a-15b))+4bcolor(red)((a-15b))=(a+4b)(a-15b).#

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How do you factor the trinomial #a^2-11ab-60b^2#?

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