Question

Answer 1

a)

`A=2^2 *5^2 -3^2 +30`

`=4*25-9+30`

`=100-9+30`

`=91+30`

`=121`

`=11^2`

b)

`B=5*3^2 +4*3^2`

`=5*9+4*9`

`=45+36`

`=81`

`=9^2`

c)

`C=5*4^3 +2^4 *5+41`

`=5*64+16*5+41`

`=320+80+41`

`=441`

`=21^2`

d)

`D=5^3 +6^3 +59`

`=125+216+59`

`=400`

`=20^2`

 

Answer 2

a: A=10^2-3^2+30

=100-9+30

=130-9=121=11^2

b: B=3^2(4+5)=3^2*3^2=9^2

c: C=5*64+16*5+41=320+41+80=441=21^2

d: D=125+216+59=400=20^2