Mathematics
Factorise:
1 - 18z - 63z2
Factorisation
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Answer
Given,
⇒ 1 - 18z - 63z2
⇒ 1 - 21z + 3z - 63z2
⇒ 1(1 - 21z) + 3z(1 - 21z)
⇒ (1 + 3z)(1 - 21z).
Hence, 1 - 18z - 63z2 = (1 + 3z)(1 - 21z).
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Factorise:
1 - 18z - 63z2
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Given,
⇒ 1 - 18z - 63z2
⇒ 1 - 21z + 3z - 63z2
⇒ 1(1 - 21z) + 3z(1 - 21z)
⇒ (1 + 3z)(1 - 21z).
Hence, 1 - 18z - 63z2 = (1 + 3z)(1 - 21z).
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