ICSE Class 9 Answered
Factorise
2.1 5x-3xy
2.2 a²-25b²
2.3 a²-14a+24
2.4 4a²b-6ab²+12ab³
2.5 8x²-32
2.6 m³(x-1)+n²(1-x)
2.7 -3x-15x+42
2.8 9(a+b)²-25
2.9 m²(a-2y)-2m(a-2y)-15(a-2y)
2.10 X6/4 - 16y8/81a²
2.11 2a+4b-2bx-ax
2.12 (2x-y)(a-b)-3ax+3xb
Simplify
3.1 2x-2y/x-y
3.2 4a+2b /4a²-b²
3.4 (2p-3)² /3-2p
3.4 x²-5x-6 /x+1
Asked by mbhelesifisokzn | 12 Aug, 2019, 08:07: AM
Expert Answer
1. 5x-3xy=x(5-3y)
2. a2-25b2=a2-(5b)2=(a-5b)(a+5b)
3. a2-14a+24=a2-12a-2a+24=a(a-12)-2(a-12)=(a-12)(a-2)
4. 4a2b-6ab2+12ab3=2ab(2a-3b+6b2)
5. 8x2-32=8(x2-4)=8(x-2)(x+2)
Answered by Renu Varma | 12 Aug, 2019, 10:18: AM
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