Question

(v) a2 + 5ab - 10462
= a2 + 13ab - 8ab - 10462 -104
a(a + 136) - 8b(a + 13b) 13
= (a + 13b)(a – 8b)
-8
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71.620
EXERCISE 7.4.
Factorise :
1. x2 + 7x + 12
2. y2 + 12y + 35
3. a2 + 13a + 42
4. z2 - 6z – 16
5. x2 - 19x + 90
6. y2 + 12y - 45
7. p2 - 14p + 24
8. m2 + 34mn - 72n2
9. a2 - 10ab – 75b2 [HOTS]
10. p2 – 22p + 121
11. x2y2 + 40xyz – 22522 [HỌTS] 12. 9 - 6y + y2
13. a2b2 + abc - 156c2 [HOTS] 14. 12 - 9t – 36
15. y2z2 – xyz – 56x2 [HOTS]
16. 272x² +11x+6V2 [HOTS] 17. 13x² + 7x+2/3 [Hots]
HD
XE
7.6 Division of Polynomials by Factorisation Method
To divide a polynomial by another polynomial, we factorise both the dividend and divisor (if possible)
in common factors. Following examples will make the process clear.
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Answer 1

Answer:

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