Math, asked by varunkumarreddy, 1 year ago

Factorise x square - 4x + 21

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Answered by ADUSREE04

1

Answer:

Step-by-step explanation:

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Answered by Anonymous

0

Step-by-step explanation:

x^2 - 4x - 21 = 0

x^2 - 7x + 3x - 21 = 0

x(x - 7) +3(x - 7) = 0

(x + 3) (x - 7) = 0

x = -3, 7

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