Question

(x²-4x-21) = ?????????​

Answer 1

Step-by-step explanation:

x²-7x+3x-21=0 x=7 and x=-3 is the answer of this question

Answer 2

Answer:

x^2-4x-21

x^3-7x+3x-21

x(x-7)+3(x-7)

x=7

x=-3

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