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Answer is :
Step-by-step explanation:
Given equation,
Using FOIL method
Multiply first two terms,
Multiply outside two terms.
Multiply inside two terms,
Multiply Last two terms,
The given equation becomes,
Answer:
w² + 3w - 4
Use FOIL.
F - first × first
O - outside
I - inside
L - last
(w - 1)(w + 4) =
F - first × first: w × w = w²
O - outside: w × 4 = 4w
I - inside: -1 × w = -w
L - last: -1 × 4 = -4
= w² + 4w - w - 4
Now combine like terms.
= w² + 3w - 4