Question

3. Find the product of the following and verify the result for a = -1 and b = 2 : (i) (3a + 5b) × (-a2 – 62) (ii) (a2 + 3a + 5) x (a + 7) (iii) 11a2b2 x(-7a2 + 5ab - 362) (iv) 662 x(-3a) (4b) x (3a - 2b) + - -​

Answer 1

Answer:

1) =(3×-1)×(-×-1×2-62)

 =-3×(2-62)

= -3×-60

= 180.

2)  = (-1×2+3×-1+5) × (-1+7)

     =[-2+ (-3) +5]×6

=[-2-3+5]×6

=[-5+5]×6

=[0]×6

=0.

3) =11×-1×2×2×2[-7×-1×2 + 5×-1×2 - 362]

 = -88[14-10-362]

 = -88[-358]

  =31504.

Step-by-step explanation: