Question

. Multiply: (x – 4)(x + 5)

Answer 1

(x-4)(x+5)

x^2 + 5x -4x -20

x^2 + x - 20

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Answer 2

Answer:

x^2+x-20

Step-by-step explanation:

x(x+5)-4(x+5)

=x^2+5x-4x-20

=x^2+x-20