Math, asked by mithileshkumary7830, 9 months ago

(x+4) and ( x-5) are the factors of ------------

Answers

Answered by Jbk55

2

Answer:

ans. is X2 -9x -20

Step-by-step explanation:

x2 -9x +20 =0

x2 -5x - 4x +20

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

(x-4) (x+5)

now,

x-4 = 0. and x+5= 0

x= 4. x=-5

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