How do you multiply #(4x + 3) ( 5x - 8)#?

4 Answers
May 11, 2018

#20x^2-17x-24#

Explanation:

To multiply this you have to multiply the first two terms inside the first parenthesis which are #4x+3x# by the other two terms #5x-8.#

You multiply #4x * 5x# and then by #-8# then you do the same with the #3#.

you will get 2#0x^2-32x+15x-24# then you combine like terms which are #-32x+15x# and you get #20x^2-17x-24#.

Hope this helps

Well, the answer is #20x^2 - 17x - 24#

Explanation:

How to figure it out.

take the equations and do this: #(4x + 3) (5x + -8)#
(you have to make the equations positive, so make numbers negative)

Multiply #(4x) (5x) + (4x) (-8) + (3) (5x) + (3) (-8)#
(distributive property)

#20x^2 - 32x +15x -24#
(add the like properties.)

So the answer is:
#20x^2 - 17x - 24#

May 11, 2018

Use the distributive property of multiplication.
#20x^2 − 17x − 24#

Explanation:

# (4x+3)(5x−8)#

#4x(5x−8) + 3(5x−8)#

#20x^2 − 32x + 15x − 24#

#20x^2 − 17x − 24#

May 11, 2018

Apply the property distributive.

Explanation:

The property distributive say that if you have #a (c + d)# then you can have #a*c + a*d#, applying in your problem this same idea we have this result bellow:

#(4x+3)(5x-8) = 4x*5x -8*4x + 3*5x - 3*8 = #

# = 20x^2 - 32x + 15x - 24#
# = 20x^2 -17x - 24#