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①(2a+b)²(2a+b)+(2a+b)³
=(2a+b)³+(2a+b)³
=2(2a+b)³
②(-0.1a-b)(0.1a+b)
=-(0.1a+b)(0.1a+b)
=-(0.1a+b)²
③3x²-24x+48
=3(x²-8x+16)
=3(x-4)²
④4a(x+y-z)+10a²(z-x-y)
=4a(x+y-z)-10a²(x+y-z)
=(4a-10a²)(x+y-z)
=2a(2-5a)(x+y-z)
=(2a+b)³+(2a+b)³
=2(2a+b)³
②(-0.1a-b)(0.1a+b)
=-(0.1a+b)(0.1a+b)
=-(0.1a+b)²
③3x²-24x+48
=3(x²-8x+16)
=3(x-4)²
④4a(x+y-z)+10a²(z-x-y)
=4a(x+y-z)-10a²(x+y-z)
=(4a-10a²)(x+y-z)
=2a(2-5a)(x+y-z)
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