Question

Solve this using special products

Foil method:

(4x-1)(x-25)

pls help me write here the answer

i admitted it im SLOW

Answer 1

=(4x-1)x - (4x-1)25
=4x^2-x-100x+25
=4x^2-101x+25

Answer 2

FOIL and unfortunate acronym for "first, outer, inner, last" something all math teachers will spend time in purgatory for.
you have to do 4 multiplications here,
First
\[4x\times x\]
Outer
\[4x\times -25\]Inner
\[-1\times x\]
Last
\[-1\times -25\]

Answer 3

foil is just a memory aid for expanding these products
first, outside, inside, last - referring to the position of the terms in the brackets.

Answer 4

and a bad one at that!

Answer 5

yes

Answer 6

when you do these 4 multiplications you get
\[4x^2-100x-x+25\] then combine like terms to get
\[4x^2-101x+25\]

Answer 7

umm whats the answer?
=4x^2-101x+25
is this?

Answer 8

yes that is the answer