Tamil Nadu Board of Secondary EducationSSLC (English Medium) Class 9th
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Factorise the following: t² + 72 – 17t - Mathematics

Sum

Factorise the following:

t² + 72 – 17t

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Solution

Product = +72, sum = –17

Split the middle term as – 9t and – 8t

t² – 17t + 72 = t² – 91 – 8t + 72

= t(t – 9) – 8(t – 9)

= (t – 9)(t – 8)

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APPEARS IN

Samacheer Kalvi Mathematics Class 9th Tamil Nadu State Board
Chapter 3 Algebra
Exercise 3.6 | Q 1. (iv) | Page 107
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