Question

factorise - 25x^2 + 16y^2 +4z^2 - 40xy +16yz -20xz

Answer 1

$\huge\colorbox{aqua}{Ãn§wer࿐ ❤} \\ 25x^2 + 16y^2 +4z^2 - 40xy +16yz -20xz \\ {25x}^{2} - 40xy + 16 {y}^{2} + 16yz + {4z}^{2} - 20xz \\ 5 x(5x - 8y) + 16y(y + z) + 4z(z - 5x) \\ (5x + 16y + 4z)(5x - 8y)(y + z)(z - 5x)$

Answer 2

25x

2

+16y

2

+4z

2

−40xy+16yz−20xz

25x

2

−40xy+16y

2

+16yz+4z

2

−20xz

5x(5x−8y)+16y(y+z)+4z(z−5x)

(5x+16y+4z)(5x−8y)(y+z)(z−5x)