计算:(a-5)+3(4a-3)=___; -3(p-2q)-5(2p+q)=______

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计算:(a-5)+3(4a-3)=___;-3(p-2q)-5(2p+q)=______计算:(a-5)+3(4a-3)=___;-3(p-2q)-5(2p+q)=______计算:(a-5)+3(4

计算:(a-5)+3(4a-3)=___; -3(p-2q)-5(2p+q)=______
计算:(a-5)+3(4a-3)=___; -3(p-2q)-5(2p+q)=______

计算:(a-5)+3(4a-3)=___; -3(p-2q)-5(2p+q)=______
(a-5)+3(4a-3)=13a-14
-3(p-2q)-5(2p+q)=-13p+q

13a-14;q-13p.

计算:(a-5)+3(4a-3)=___; -3(p-2q)-5(2p+q)=______ 运用平方差公式计算:1.(a+7)(a-7)=____ 2.(3a-2)(3a+2)=___ 3.(2+a)(a-2)=____ 4.102×98=___ 计算:(a+3a+5a+...+2013a)-(2a+4a+6a+...+2012a)=? 当a等于___时,(a-3)的2次方-5有最___值___ 在横线上填上恰当的词语(英语).1、 There are ___ seasons in a year .2、 There are ___ seasonds in a minute.3、 There are ___ months in a year.4、 There are ___ days in a week.5、 There are ___ hours in a day.6、 The ___ month in 计算(a+3a+5a+.+2003a)-(2a+4a+6a+.+2004a) 已知a-b=5,ab=3,则(a^+1)(b^+1)=___ (1)若a-(-b)=0,则|a-b|=___(2)若a0则|a-b|=___(3)若a=-5,b=-3,则|a-b|(4)若a=2,|b|=7,则a-b=___ 几道有理数加减法的填空题.(-20)+(+3)-(-5)-(+7)=___+___+___+___=___=___;(+9)-(+10)+(-2)-(-8)+2=___+___+___+___+___=___. 若a为int变量,则计算表达式a=25/3%3后a的值为___ 下列计算中,正确的个数是(___)(1)x^3+x^5=x^8 2)y^3*(2y^2)^2=4Y^7 3){-(a+b)^2}^3=-(a+b)^6 4)(-a^2b^3)^3=-a^6b^9 a .1 b.2 c.3 d.4 不等式(x-3)(x-3)≥(x+2)(x-2)的解是?(3-2a)(3+2a)=___(-x-5)(-x+5)=___(x-y-z)(__)=x的2次方-(y+z)的2次方(-2a+___)(___+7分之1b)=49分之1 b的平方-4a的平方 负3分之5除以【负4分之1-(a)】=5分之3,则a=___? 如图7-4-8所示,若∠A=∠3,则___∥___( );若∠2=∠E,则___∥___( );若∠___+∠___=180°,则___∥___( ).(括号内注理由) (3a+___)(___-4b)=16b^2-9a^2 数学几道填空题 计算:(-1)+(-2)+(+3)+(+4)+(-5)+(-6)+(+7)+(+8)+……+(-2005)+(-2006)+(+2007)+(+2008)=___.已知a,b,c在数轴上的对应点如图所示,b在最左 计算:(5a²+2a-1)-4(3-8a+2a²) 7-(a-5)²的最大值是___,其中a=___;(a+b)²-8的最小值是___,其中a,b关系是