Question

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Answer 1

$25)6a x^{2} -12a x^{3} =6a x^{2} (1-2x) \ 27)2a ^{3} -8a=2a(a ^{2} -4)=2a(a-2)(a+2) \ 28) 2a ^{3} -2ab^{2} =2a(a ^{2} -b ^{2} )=2a(a-b)(a+b) \ 31)5 m^{2} n-20mn ^{2} =5mn(m-4n) \ 33)1-64b ^{2} =(1-8b)(1+8b)$

Answer 2

1)6ax²-12ax³=6ax²(1-2x)
2)2a³-8a=2a(a²-4)=2a(a-2)(a+2)
3)2a³-2ab²=2a(a²-b²)=2a(a-b)(a+b)
4)5m²n-20mn²=5mn(m-4n)
5)1-64b²=(1-8b)(1+8b)