How do you simplify #4x(-5x - 9)#?

1 Answer
seol
Apr 16, 2017

#=-20x^2-36x#

Explanation:

Distributive Property: given #a(v+z)# distribute to #a(v)+a(z)#
#a=4x#, #v=-5x#, #z=-9#
#\therefore 4x(-5x-9)=4x(-5x)+4x(-9)#
#=-20x^2-36x#

Not sure if this is what you meant, it's kind of late.
Please correct if I misread...

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