1. ## Checking

The instructions are to multiply
(w+1/4)…stands for w + one fourth (w+1/5)…w + one-fifth
(w + 1/4) (w + 1/5)
w (w+1/5) + 1/4(w+1/5)
w* w +w*1/5 + 1/4 * w + 1/4 *1/5
w^2 + 1/5x +1/4x + 1/20
w^2 + 9/20x + 1/20
I fell I have done something wrong here?

2. Originally Posted by Brama Bull
The instructions are to multiply
(w+1/4)…stands for w + one fourth (w+1/5)…w + one-fifth
(w + 1/4) (w + 1/5)
[SIZE=3]w (w+1/5) + 1/4(w+1/5)
w* w +w*1/5 + 1/4 * w + 1/4 *1/5
w^2 + 1/5x +1/4x + 1/20
w^2 + 9/20x + 1/20
I fell I have done something wrong here?
$(w+\frac{1}{4})(w+\frac{1}{5})$

$=w^2+\frac{w}{5}+\frac{w}{4}+\frac{1}{20}$

$
=w^2+\frac{9}{20}w+\frac{1}{20}
$

There is a mistake with the variable ... should be w and not x.