Question

Show all work so I can see how it's done please. Find the following product: (y-5)^2

Answer 1

Use the FOIL method.

Answer 2

1+2+1 and fill in the as and bs ... makes sense in me head

Answer 3

(y-5)^2 = (y-5)(y-5)
= y^2 -5y - 5y + 25
= y^2 - 10y + 25

Answer 4

\[(y-5)^2\]
\[y^2 - 5y - 5y + 25\]
\[y^2 - 10y +25\]

Answer 5

FOIL is just memory clutter; you already know how to multiply.

y-5
y-5
----
y^2 -5y
-5y +25
-------------
y^2 -10y + 25

Answer 6

multiply the terms in second bracket by y then do the same with -5

Answer 7

i agree amistre - there is no real need for FOIL

Answer 8

amistre, how did you write your solution?

Answer 9

y-5
times y-5
-----
y.y-5y
-5y+25
-----------

or the more normal way of multiplying may be:


y-5
times y-5
-----
-5y+25
y.y-5y
-----------

Answer 10

with polys i like to start at the left and go right

Answer 11

(y-5)^2
(y)^2-2(y)(5)+(5)^2
y^2-10y+25

Answer 12

whoops nvm, i thought for a second you were using a program to write/draw your solution. but your typing :P my bad.

Answer 13

7*5

(3+4) (2+3)

3 + 4
2 + 3
------
3.2+4.2
+3.3 +4.3
------------
6 + 8 + 9 + 12 = 35

Answer 14

lol ... good old ascii characters ;)