Question

Factorise the following :

(i) 9x2 + 4y2 + 16z2 + 12xy – 16yz – 24xz

(ii) 25x2 + 16y2

+ 4z2 – 40xy + 16yz – 20xz

(iii) 16x2

+ 4y2

+ 9z2

– 16xy – 12yz + 24 xz​

Answer 1

Answer:

Answer

Open in answr app

9x2+4y2+16z2+12xy−16yz−24xz

=(3x)2+(2y)2+(−4z)2+2(3x)(2y)+2(2y)(−4z)+2(−4z)(3x)

=(3x+2y−4z)2

=(3x+2y−4z)(3x+2y−4z)

Hence facorise.

Formula:

(a+b+c)2=a2+b2+c2+2ab+2bc+2ca

Step-by-step explanation:

here is ur answer bro