How do you solve #3x^2+45=24x# by factoring?

Question

2829 views around the world

You can reuse this answer
Creative Commons License

Answer 1 · 2016-10-26T06:16:58

#x=5#, #3#

#3x^2+45=24x#

#3x^2-24x+45=0#

Factorise.

#3x^2-9x-15x+45=0#

#3x(x-3)-15(x-3)=0#

#(3x-15)(x-3)=0#

#3x-15=0# and #x-3=0#

#:.x=15/3=5# and #x=3#