Mathematics
Factorise:
x2 - 17x - 84
Factorisation
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Answer
Given,
⇒ x2 - 17x - 84
⇒ x2 - 21x + 4x - 84
⇒ x(x - 21) + 4(x - 21)
⇒ (x - 21)(x + 4).
Hence, x2 - 17x - 84 = (x - 21)(x + 4).
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Factorise:
x2 - 17x - 84
1 Like
Given,
⇒ x2 - 17x - 84
⇒ x2 - 21x + 4x - 84
⇒ x(x - 21) + 4(x - 21)
⇒ (x - 21)(x + 4).
Hence, x2 - 17x - 84 = (x - 21)(x + 4).
Answered By
3 Likes