Question

solve for y :y*2-(y+2)(y-2)÷(y+2)=1/2​

Answer 1

Answer:

Answer

y+

y

1

=9

Squaring both side

(y+

y

1

)

2

=9

2

y

2

+

y

2

1

+2×y×

y

1

=81

y

2

+

y

2

1

=81−2=79

Squaring

(y

2

+

y

2

1

)

2

=(79)

2

y

4

+

y

4

1

+2×y

2

×

y

2

1

=6241

y

4

+

y

4

1

=6,239.