SOLUTION: Use FOIL to multiply: (5x - 6)(3x - 4) Show Steps!

Algebra ->  Distributive-associative-commutative-properties -> SOLUTION: Use FOIL to multiply: (5x - 6)(3x - 4) Show Steps!      Log On


   

Question 180535: Use FOIL to multiply:
(5x - 6)(3x - 4)
Show Steps!
Found 2 solutions by Mathtut, josmiceli:
Answer by Mathtut(3670) About Me  (Show Source):
You can put this solution on YOUR website!
(5x - 6)(3x - 4) F (5x)(3x))
                 0 (5x)(-4))
                 i (-6)(3x))
                 l (-6)(-4))
:
put it all together
:
15x%5E2-20x-18x%2B24
:
combine like terms:
:
highlight%2815x%5E2-38x%2B24%29
:


Answer by josmiceli(19441) About Me  (Show Source):
You can put this solution on YOUR website!
Practice doing it this way, and you'll catch on:
Suppose I have
13%2A41+=+533
Now I'll separate the number into 2 factors, let's say
%289+%2B+4%29%2825+%2B+16%29
I believe FOIL stands for first-outer-inner-last
Following this, I get
%289+%2B+4%29%2825+%2B+16%29+=+9%2A25+%2B+9%2A16+%2B+4%2A25+%2B+4%2A16
%289+%2B+4%29%2825+%2B+16%29+=+225+%2B+144+%2B+100+%2B+64
%289+%2B+4%29%2825+%2B+16%29+=+533
Try a simpler one, like
5%2A11+=+55
5%2A11+=+%283+%2B+2%29%287+%2B+4%29
%283+%2B+2%29%287+%2B+4%29+=+3%2A7+%2B+3%2A4+%2B+2%2A7+%2B+2%2A4
%283+%2B+2%29%287+%2B+4%29+=+21+%2B+12+%2B+14+%2B+8
%283+%2B+2%29%287+%2B+4%29+=+55
After practice this way, you can put in x's and
y's anywhere you like, and you'll get correct
answers