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Factorise : x²-21x+90

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Factorise : x²-21x+90

Posted by Tanupreet Kaur 4 years, 6 months ago

CBSE > Class 08 > Mathematics

1 answers

Yogita Ingle 4 years, 6 months ago

To Factorise : x²−21x+90

By splitting the middle term

=x²−6x−15x+90

=x(x−6)−15(x−6)

=(x−6)(x−15)

So, x²−21x+90=(x−6)(x−15)

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