Question

correct answer = follow + like​

Answer 1

Answer:

a) a²+b²-ab

=4²+(-5)²-(4×-5)

=16-25+20

=36-25

= 9

b) a²b + ab²

= 4²×-5+ 4×-5²

=16×-5+4×25

= -80+100

= 20

c) 4-(-5) + 4-(-5)

4+(-5)

= 4+5 + 4+5

4-5

= 9 + 9

-1

=. -9 +9

1

= 0/1

=0

d) (a+b)² -(a-b)²

= (4)²+(-5)²+2×4×-5 - (4)²+(-5)²-2×4×-5

=16+25 -40 - (16+25-40)

=16+25-40 -16-25+40(all cancelled)

=0

Hope This Helps You

With Regards

@shivamjha29