Question

1.)-3a^2(2a-3b)
2.)12(p+3)-12(p-1)
3. )5a(a+3)-5(a^2-1)

Answer 1

Answer:

1. 3×2 =6( 2a-3b)

= 12a-16b

2. (12p+36)-(12p-12)

=12p+36-12p++12

=+48

3.

Answer 2

Answer:

Required volume = 5a × 3a2 × 7a4. = (5 × 3 × 7) × (a × a2 × a4). = 105a1+2+4 = 105a7. (ii) Required volume = 2p × 4q × 8r. = (2 × 4 × 8) × (p × q × r).