Question

Factorise 12x+y^2-z^2-6xy+20yz-6zx
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Answer 1

Answer:

factorise - $12x+y^{2}-z^{2} -6xy+20yz-6xy$

formula - $x^{3} -y ^{3}-z^{3} -3xyz=(x+y+z)(x^{2} +y^{2} +z^{2} -xy-yz -xz)$

I gave u hint do it by your self if any doubt don’t hesita to answer on m any question

one more hint while factorising take $x=\sqrt{x}$

thankyou

Answer 2

Answer:

Answer:

9x2 + y2 + z2 - 6xy + 2yz - 6zx

= (3x)2 + y2 + z2 - 2 3x y + 2yz - 2 z 3x

= (3x - y - z)2

{Using (a-b-c)2=a2+b2+c2-2ab+2bc-2ca}

When x=1,y=2 and z=-1,

9x2 + y2 + z2 - 6xy + 2yz - 6zx

= (3x - y - z)2

= [3(1) - 2 - (-1)]2

= (3 - 2 + 1)2 = 22 =

Btw am using pc so B.io mat baat noi kr skte -_-

and yeh brainly ke log bade mtlbi hai itne bade bade answer do aur bdle mai brainlist noi bnate -_-

Step-by-step explanation: