DSC 1520 ASSIGNMENT 02
COMPLETE SOLUTIONS
2020
, Question 1
( 2 a2 b 3 ) × ( a b 4 )
2 3
1.
( 2 a3 b2 )
4
( 22 a 2× 2 b 3 ×2 ) × ( a 1× 3 b 4 × 3)
=
22 a3 ×4 b2× 4
( 4 a4 b6 ) × ( a3 b12 )
=
4 a12 b8
4 a4+ 3 b6+12
=
4 a12 b8
4 a7 b18
=
4 a12 b8
a7 b18
=
a12 b8
= a7−12 b18−8
= a−5 b10
b10
=
a5
2.
√ 4x
y−4
4x 1
= (y )−4
2
1
= 4 x2
y−4 × ½
1
2
= 4x
y−2
= 4 √ x y2
COMPLETE SOLUTIONS
2020
, Question 1
( 2 a2 b 3 ) × ( a b 4 )
2 3
1.
( 2 a3 b2 )
4
( 22 a 2× 2 b 3 ×2 ) × ( a 1× 3 b 4 × 3)
=
22 a3 ×4 b2× 4
( 4 a4 b6 ) × ( a3 b12 )
=
4 a12 b8
4 a4+ 3 b6+12
=
4 a12 b8
4 a7 b18
=
4 a12 b8
a7 b18
=
a12 b8
= a7−12 b18−8
= a−5 b10
b10
=
a5
2.
√ 4x
y−4
4x 1
= (y )−4
2
1
= 4 x2
y−4 × ½
1
2
= 4x
y−2
= 4 √ x y2
