1. 1/4m³-3m²n+9mn²
2. 16(a+b)²-4(a-2b)²
3. 36(x-y)²-24(x-y)+4
4. 2ax²-14axy+18ay²
1. 1/4m³-3m²n+9mn²
2. 16(a+b)²-4(a-2b)²
3. 36(x-y)²-24(x-y)+4
4. 2ax²-14axy+18ay²
1. 1/4m³-3m²n+9mn²
=m(1/4m²-3mn+9n²)
=m(1/2m-3n)²
2. 16(a+b)²-4(a-2b)²
=(4a+4b+2a-4b)(4a+4b-2a+4b)
=6a(2a+8b)
=12a(a+4b)
3. 36(x-y)²-24(x-y)+4
=4[9(x-y)²-6(x-y)+1
=4(3x-3y+1)²
4. 2ax²-14axy+18ay²
=2a(x²-7xy+9y²)
1. 1/4m³-3m²n+9mn²
=m(1/4m^2-3mn+9n^2)
=m(1/2m+3n)^2
2. 16(a+b)²-4(a-2b)²
=4[4(a+b)²-(a-2b)²]
=4(2a+2b+a-2b)(2a+2b-a+2b)
=4*3a*(a+4b)
=12a(a+4b)
3. 36(x-y)²-24(x-y)+4
=4[9(x-y)²-6(x-y)+1]
=4(3x-3y-1)^2
4. 2ax²-14axy+18ay²
=2a(x²-7xy+9y²)
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m(1/2m-3)^2