Question

Answer 1

\(2B\\ a,4x^4+12x^2y+9y^2=\left(2x^2+3y\right)^2\\ b,x^2y^2-4xy+4=\left(2-xy\right)^2\\ c,=-4x^2-4xy+y^2=-\left(2x-y\right)^2\\ d,\left(-2x+y^2\right)\left(-2x-y^2\right)=4x^2-y^4\)

\(3A\\ a,A=1-27m^3-6+26m^3=-m^3-5\\ A=-125-5=-130\\ b,B=4x^2-12x+9+4x^2+4x+1-8x^2+18=-8x+28\\ B=-24+28=4\)

\(3B\\ a,M=a^3-8b^3+8b^3-12ab^2+6a^2b-a^3=6a^2b-12ab^2\\ M=12+48=60\\ b,N=4x^2y^2+xy-6-1+4xy-4x^2y^2=5xy-7\\ N=-\dfrac{5}{2}-7=-\dfrac{19}{2}\)