Let = 3, = 5 and = 5. The value of is |
|||
(a) |
− 106.5 |
(b) |
− 118.5 |
(c) |
− 99.5 |
(d) |
− 112.5 |
Let = 3, = 5 and = 5. The value of is |
|||
(a) |
− 106.5 |
(b) |
− 118.5 |
(c) |
− 99.5 |
(d) |
− 112.5 |
= 6 + 5 . − 6
= (6 × 9) + 5 . (6 × 25) … (i)
As 25 = 9 + 25 + 2 .
⇒ 2 . = − 9 … (ii)
From (i) and (ii),
⇒ = 54 – 22.5 – 150
= − 118.5