【题目】因式分解的题,求答案!2x^2-7x+3 3x^2-13x+10 3x^2-13x-10 6x^2-7x-5 5x^2+6xy-8y^2 6x^2-11xy+3y^2 x的四次方+6x2-73m2n2-2mn-12+3x-10a2+4a-21m2+4 m-12x2+2x-15y2-3y-182x2-x-16x^2+7x+2 6y2-11y-106x2+x-153a2-8a+45x2+7x-65+7m-6m22x^2+1...
解: (1) -1/3m^2-m^2=(-1/3-1)m^2=-4/3m^2 (2) -7x^2y+6x^2y=(-7+6)x^2y=-x^2y (3)6y2-8y3+5-3y3+4y2-2=(-8-3)y2+(6+4)y2+(5-2)=-11y3+10y2+3 3+(7-10)-6x3y =-xy^2+(13)/2x^3-3-6x^3y (5)3x2-5x-1-2x+5-3x2+4x3=(3-3)x2+...
2. x^3+8y^3-z^3+6xyz3. a^5+a+14. x^3-3x^2+45. 2x^3-13x^2+25x-146. x^2+5xy+6y^2+8x+18y+127. x^2+2xy-8y^2+2x+14y-38. 4x^2+4xy-3y^2-8x+39. 4x^2-9y^2+6x+3y+210. xy+y^2+x-y-211. 6x^2-7xy-3y^2-x+7y-212. 6x^2-7xy-3y^2-xz+7yz...
Add:8x2−5xy−3y2,2xy−y2x2andy2+xy−6x Solve:- 6xy + 3y + 4x + 2 A=4x2+y2−6xy, B=3y2+12x2+8xy, C=6x2+8y2+6xyfind A+B+C If A=4x2+y2−6xyB=3y2+12x2+8xyC=6x2+8y2+6xyfind (A-B)-C A=4x2+y2−6xy, B=3y2+12x2+8xy, C=6x2+8y2+6xyfind A+...
因式分解十字相乘(1)2x^2+3y^2+5xy+7y+5x+2(2)6x^2+6y^2+13xy+7x+8y+2 (3)3a^4+4b^4+7a^2b^2+8a^2+11b^2-3(4)(x^4+3x^2)+(3x^2+9x)+(2x+6)全部答对者,(5)8a^2-27 b^2+6ab+1(6)a(1-a)-(a-1)^2(7)(4a-5b)(3m-2p)+(4b-a)(3m-2P)...
[解](1) 3+1+1/2÷(41)/1 2-3+1 6-7+1+20-22+8 6-9+3 2-2+20 2-3+1 1+19-22 -3/2+1/2 +(41)/2-(45)/2+8 ++ ∴Q=3x^2+x^2y+1/2xy^2+(41)/4y^3 , R=(33)/4xy^4-9/4y^5 (2) 2-(v-3) 1+(3y-4) 2+(5y-5)-(3y2-13y+12) 2+(...
解:原式二-7x2 6x2 -5xy - 6y2 - 2xy 2x2 = x2 - 7xy - 6y2 ( 2 ) 2 2 3x 2x -2 -15x 1 -5x 解:原式--13x -2x -1 2 2 2 2 2.已知 A = 4x - 4xy y,B=x xy-5y,求 3A— B 解A 二 4x「4xy y, B = x xy「5y 2 2 2 2 2 2 3A-B=12x -12xy ...
因式分解 1)x^2y-y^2z+z^2x-x^2z+y^x-z^y-2xyz 2)x^3+x-2 3)x^(5n)+x^n+1 4)2x^2-3xy-2y^2+5x+5y-3 5)x^4-2(x^2)y-3y^3+8y-4 6)24xy-2+x+2y+6x^2+24y^2 7)3x^2-7xy-6y^2 8)x^3+3x^2+3x+9 9)10a^2+21xy-14ax-15ay 10)x^3+x^2y-x^2z+xyz ...
Answer to: Sketch the graph of the equation. Identify the x-intercept(s) of the graph. y = x^2 - 6x - 7 By signing up, you'll get thousands of...
如图,已知R=5.6,r=1.4,求圆环的面积(π取3.14).分解因式:⑴ 3a^2+12ab+12b^2⑵ (2x-y)^2-10(2x-y)+25⑶ 8ax^2+16a^2 x+8a^3⑷ -6x^2 y-3x^3-3xy^2分解因式:⑴ x^2+3x-4⑵ x^2-3x-4⑶ x^2+8x-20⑷ x^2-5x-24⑸ x^2+12x+27⑹ x^2-8x