Q9 of 30 Page 24

Simplify :

Given


It can also be written as


⇒


⇒


We know that (am)n = amn.


⇒


⇒ 3 – 8(7) + 15(2) + 15


⇒ 3 – 56 + 30 + 15 = -8


∴ = -8


More from this chapter

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6

Simplify each of the following by rationalising the denominator:

i. ii.


iii. iv.

7

Find the value of upto three decimal places. (take √2 = 1.414 and √5 = 2.236)

 8

Find:

i. ii.


iii. iv.


v. vi.

10

If ‘a’ and ‘b’ are rational numbers, find the value of a and b in each of the following equations.

i.


ii.