Please sir Ji questions numbers 12
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tanishkasri:
pls tell me what I have to do
factorise?
x2+y2+2(xy−yz−zx)
Factors
Factors
x2+y2+2(xy−yz−zx)factors
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check krke batao yahi h kya proof
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=x^2+y^2+2xy-2yz-2zx
=(x^2+y^2+2xy)-2(yz+zx)
=(x+y)^2-2[z(y+x)].
(we can write y+x as x+y also)
=(x+y)^2-2[z(x+y)]
=(x+y)[x+y-2(z)]
=(x+y)(x+y-2z)
your answer is (x+y)(x+y-2z)
hope it will be correct
=(x^2+y^2+2xy)-2(yz+zx)
=(x+y)^2-2[z(y+x)].
(we can write y+x as x+y also)
=(x+y)^2-2[z(x+y)]
=(x+y)[x+y-2(z)]
=(x+y)(x+y-2z)
your answer is (x+y)(x+y-2z)
hope it will be correct
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