Question

factorise
x^2+21x-100​

Answer 1

Answer:

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Answer 2

Answer:

(x-4) (x+25)

Step-by-step explanation:

x^2 + 21x -100 = x^2 +25x - 4x -100

=> x(x + 25) -4 (x + 25)

=> (x - 4) (x + 25)

Thank you.