ques
1.rationalisation of 1/√7-√6=
2.the degree of polynomial 4-y power 2
3.2power2/3 x 2power1/5
4.(x-y)power3=xpower3 +ypower3=_______+_______
5.
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Answer:
1/√7-√6X √7plus √6/ √7plus√6
√7plus√6/(√7)square-(√6)square
√7plus√6/7-6
√7plus√6/1
√7plus√6
2. (4-y)square formula (a-b)square=asquare plus bsquare -2ab
(4)square plus (-y) square - 2×4×(-y)
16+ysquare +8y
ysquare+8y+16
factorisation
ysquare+4y+4y+16=0
y(y+4) +4(y+4)=0
(y+4) (y+4)=0
y+4=0 y+4=0
y=-4 y=-4
(2/3) square×(1/5) square
4/9×1/25
4/225
0.017
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