(3x^3-2x^2+5x-2)-_________=4x^3-x^2+5

数学九年级上册34页练习题1.2(降次---解一元二次方程)两题都要详细过程哦!1.填空:(1) x^2+10x+___ = ( x+___ )^2; (2) x^2-12x+___ = ( x -___ )^2;(3) x^2+5x+___ = ( x+___ )^2; (4) x^2-(2/3)x+___ = ( x-___ )^2.2.解下列方程 已知x>2,f(x)=x2-3x+5/x-2,则f(x)有最___值,为___此时x的值为___ {2,1}___{x|x-3x+2=0} *-----------------------------------------------*| 6 4 X | 8 X X | X X 5 || X X X | X X X | X 7 8 || X X X | X X X | X X X ||---------------+---------------+--------------- || X X X | X X X | 5 1 X || X X X | X 6 X | X X X || 8 X X | 3 5 X | 2 X X || 填上适当的数,是下列等式成立(1)x^2+4x+___=(x+2)^2.(2)x^2-6x+()=(x-___)^2.(3)x^2-5x+__=(x-___)^2(4)x^2+2分之1x+___=(x+___)^2 ⑴x=2,-（9x-4x+5）-（-3-8x+3x）=___ 填九宫格帮帮忙.x x 6 x x 7 x x 98 x x x 3 x 1 x x 9 x x 6 x 5 x 3 x x x 3 x x x x 1 8x x x 9 x 1 x x x2 1 x x x x 6 x x x 6 x 7 x 3 x x 1 x x 9 x 2 x x x 47 x x 8 x x 5 x x (3x-5y)(10y-6x)=___(___)^2=____. x²-x____=(x-___)² 4x²+4x+____=(2x+____)² x²-3/5x+x²-x____=(x-___)²4x²+4x+____=(2x+____)²x²-3/5x+____=(x-___)² x/2=y/3=z/5则（2x+y-z)/x=___ 当x=___时,2x-1与2x／3-5 互为相反数, 如果代数式2X+3与X-5的值互为相反数,那么X=___. 如果x^2-3x-10=(x+a)(x+b),那么a+b=___ 若3x^2-4x-5=7,则x^2-4/3x=___ 若5x+3y=3x+4y=x+2y+6,则x+y=___ 已知分式x-5x+a/x-3,当x=2时,分式无意义,则a=___... 超简单配方方程,用配方算,1.x^2-2x-1=0 2.x^2=99-2x 3.x^2-5x+4=0 4.3y+4=y^2 如果把下题做了加10分!把下列各式配方完全平方式 x^2+4x+___ =（x+___）^2 x^2-3x+___=(X-___)^2 X^2-根号3X+___=(X-___)^2 X^2+PX+___=（x-___)^2 在二元一次方程2x+3y=5中,如果x和y的值相等,则x=___.就要x=___,