Question

b, 16(4x+5)^5 - 25 (2x+2)^2

c, ( x - y + 4 )^2

h, x^3y^6z^9 - 125 

làm ơn giải chi tiết cho mik

Answer 1

c: (x-y+4)^2

=x^2+y^2+16+2*x*(-y)-2*y*4+2*x*4

=x^2+y^2+16-2xy-8y+8x

h; x^3y^6z^9-125

\(=\left(xy^2z^3\right)^3-5^3\)

\(=\left(xy^2z^3-5\right)\left(x^2y^4z^6+5xy^2z^3+25\right)\)