Multiply: (x – 4)(x + 5)

asked Dec 22, 2021 79.7k views

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2 votes

It should equal to X^2+x-20
By foiling x*x equals x^2
Then x*5 equals 5x
Then -4*x equals -4x
Then -4*5 equals 20 then combine !

Luis De Haro answered Dec 24, 2021

4.8k points

2 votes

Answer:

x2 + x - 20

Explanation:

multiply the two : x(x+5) - 4 (x+5)

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