 could someone help me with this assignment in Algebra? - XP Math - Forums Sign Up FREE! | Sign In | Classroom Setup | Common Core Alignment  XP Math - Forums could someone help me with this assignment in Algebra? 07-25-2007 #1 MarkAngelo Guest   Posts: n/a could someone help me with this assignment in Algebra? 1) (x + 2y + 2z)sqare2) (2x + 3y - 4z + 3w)square3) (xsquare - 2x + 3)square4) (2x + 3yz + w)sqare5) (x + y - 3z)square6) (x + y)to the 4thplease do include your solutions, I would really appreciate the helps. T_T  07-25-2007 #2 de4th Guest   Posts: n/a It's the same process for all of them... just expand and simplify.(x+2y+2z)^2= x^2 + 2xy + 2xz + 2xy + 4y^2 + 4yz + 2xz + 4yz + 4z^2= 4y^2 + 4z^2 + x^2 + 4xy + 4xz + 8yz...You can do the rest =), good luck.  07-25-2007 #3 gp4rts Guest   Posts: n/a Multiply each term in the expression by the whole expression and add like terms. For example x + 2y + 2z)^2 = (x + 2y + 2z)*(x + 2y + 2z)Multiplying the first term (x) by the full expression (x + 2y + 2z) getx^2 + 2xy + 2xz (a)Now do the same with the second term (2y)2xy + 4*y^2 + 4*y*z (b)and finally the last term (2z)2xz + 4zy + 4z^2 (c)Then add them all [(a) + (b) + (c)] together and collect like terms.  07-25-2007 #4 DBSII Guest   Posts: n/a 1) (x+2y+2z)(x+2y+2z) (x^2+2xy+2xz)+(2xy+4y^2+4zy)+(2xz+4zy+4z^2) x^2+4xy+4xz+4y^2+8zy+4z^2  07-25-2007 #5 handsomeboy1702 Guest   Posts: n/a (x + 2y + 2z)^2 = x^2 + 4y^2 + 4z^2 + 4xy + 4xz + 8yz(2x + 3y - 4z + 3w)^2 = 4x^2 + 9y^2 + 16z^2 + 9w^2 + 12xy - 16xz + 12xw - 24yz +18yx - 24zw(x^2 - 2x + 3)^2 = x^4 + 4x^2 + 9 - 4x^3 + 6x^2 - 12x = x^4 - 4x^3 + 10x^2 - 12x + 9(2x + 3yz + w)^2 = 4x^2 + 9y^2z^2 + w^2 + 12xyz + 4xw + 6yzw(x + y - 3z)^2 = x^2 + y^2 + 9z^2 + 2xy -6xz - 6yz(x + y)^4 = x^4 + 4x^3y + 6x^2y^2 + 4xy^3 + y^4  07-25-2007 #6 sean_mccully Guest   Posts: n/a Hhm perhaps you need the definition of a square, a square is an equation to the power of 2. 2 squared is 4,the square root of 4 is 2 (2*2=4). Given above the answer to number 1 is (x + 2y + 2z)*(x + 2y + 2z) =yum alegbra!!!!!! Thread Tools Show Printable Version Email this Page Display Modes Linear Mode Switch to Hybrid Mode Switch to Threaded Mode Posting Rules You may not post new threads You may not post replies You may not post attachments You may not edit your posts BB code is On Smilies are On [IMG] code is On HTML code is Off Forum Rules
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