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3) the given value of√2=1.414
then value of 1/√2+1 =1/1.414+1
=1/2.414
4) the given 9x.x+4y.y+z.z-12xy+4yz-6zx
=9(1)(1)+4(2)(2)+(-1)(-1)-12(1)(2)+4(2)(-1)-6(-1)(1)
=9+16+1-24-8+6
=32-32
=0
5) the given p(x)=8x.x.x-k
if x=-1/2
p(-1/2)=8(-1/2)(-1/2)(-1/2)-k
0=8(-1/8)-k
0 = -1 - k
k= -1
then value of 1/√2+1 =1/1.414+1
=1/2.414
4) the given 9x.x+4y.y+z.z-12xy+4yz-6zx
=9(1)(1)+4(2)(2)+(-1)(-1)-12(1)(2)+4(2)(-1)-6(-1)(1)
=9+16+1-24-8+6
=32-32
=0
5) the given p(x)=8x.x.x-k
if x=-1/2
p(-1/2)=8(-1/2)(-1/2)(-1/2)-k
0=8(-1/8)-k
0 = -1 - k
k= -1
brainalist87:
thnks....
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