Question

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.​​

Answer 1

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