factor: 9x^2 + 4y^2 + 16z^2 + 12xy - 16yz - 24xz
Answers
Answered by
5
9x^2+4y^2+16z^2+12xy-16yz-24xz
=(3x)^2+(2y)^2+(-4z)^2+2(3x*2y)+2[2y*(-4z)]+2[(-4z)*3x]
=(3x+2y-4z)^2
where * stands for multiply
=(3x)^2+(2y)^2+(-4z)^2+2(3x*2y)+2[2y*(-4z)]+2[(-4z)*3x]
=(3x+2y-4z)^2
where * stands for multiply
Similar questions