Question

x2-a2,

- 5x² + 2a?,- 4x2 + 4a2
​

Answer 1

Step-by-step explanation:

The required sum = (x

2

−a

2

)+(−5x

2

+2a

2

)+(−4x

2

+4a

2

)

=x

2

−a

2

−5x

2

+2a

2

−4x

2

+4a

2

=(1−5−4)x

2

−(1−2−4)a

2

=(1−9)x

2

−(1−6)a

2

=−8x

2

+5a

2