计算下列各题.(1)-32+|-8|-(π-2009)0-1÷(-2)-1(2)20122-2011×2013(3)(-ab2)3?(-9a3b)
计算下列各题.(1)-32+|-8|-(π-2009)0-1÷(-2)-1(2)20122-2011×2013(3)(-ab2)3?(-9a3b)÷(-3a3b5)(4)...
计算下列各题.(1)-32+|-8|-(π-2009)0-1÷(-2)-1(2)20122-2011×2013(3)(-ab2)3?(-9a3b)÷(-3a3b5)(4)(2a+1)2-(2a+1)(-1+2a)(5)(2x+y-3)2(6)(2a-b)(4a2+b2)(2a+b)
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(1)原式=-9+8-1-1÷(-
)
=-9+8-1+2
=0;
(2)原式=20122-(2012-1)×(2012+1)
=20122-(20122-1)
=20122-20122+1
=1;
(3)原式=(-a3b6)?(-9a3b)÷(-3a3b5)
=-3a3b2;
(4)原式=4a2+4a+1-(4a2-1)
=4a2+4a+1-4a2+1
=4a+2;
(5)原式=(2x+y)2-6(2x+y)+9=4x2+4xy+y2-12x-6y+9;
(6)原式=(2a+b)(2a-b)(4a2+b2)
=(4a2-b2)(4a2+b2)
=16a4-b4.
1 |
2 |
=-9+8-1+2
=0;
(2)原式=20122-(2012-1)×(2012+1)
=20122-(20122-1)
=20122-20122+1
=1;
(3)原式=(-a3b6)?(-9a3b)÷(-3a3b5)
=-3a3b2;
(4)原式=4a2+4a+1-(4a2-1)
=4a2+4a+1-4a2+1
=4a+2;
(5)原式=(2x+y)2-6(2x+y)+9=4x2+4xy+y2-12x-6y+9;
(6)原式=(2a+b)(2a-b)(4a2+b2)
=(4a2-b2)(4a2+b2)
=16a4-b4.
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