Question

Hello gyus plss clear my doubt

The area I have circled in this I have problem how after cancel athe ans came -1

Why not 1

Answer 1

Answer:

answer is right!

take common minus in denominator and cancel both.-1will remain.

Answer 2

Answer:

The Answer is all correct.

The First Thing was that..

On Numerator We Multiply it by -1 and -1

So there will be null effect

let's See how

$y = \frac{( - 1) \times ( - 1){b}^{2} + {a}^{2} }{ - {a}^{2} - {b}^{2} }$

Afterwards,

In Numerator You will Multiply -1 with b² + a²

So the Results will be

$y = \frac{( - 1) - {b}^{2} - {a}^{2} }{ - {a}^{2} - {b}^{2} }$

Then Arrange -b² and -a² according to Denominator

$y = \frac{( - 1) - {a}^{2} - {b}^{2} }{ - {a}^{2} - {b}^{2} }$

Hence -a² - b² will be Divided and tye results will be

$y = - 1$