Prev

Next

Q9 of 38 Page 31

Let us solve:
2^{x + 2} + 2^x–1 = 9

Given that 2^{x + 2} + 2^x–1 = 9

Formula used: - (a1) if then a = b

2^{x + 2} + 2^x–1 = 2³ + 1

Using formula (a1)

and

x = 1

More from this chapter

8

If a^x = b^y = c^z and abc = 1, then let us show that xy + yz + zx = 0.

9

Let us solve:

49^x = 7³

9

Let us solve:

2^{x + 1} + 2^{x + 2} = 48.

9

Let us solve:

Questions · 38

2. Laws of Indices

1 1 1 2 2 2 2 2 2 2 3 3 3 4 4 4 4 5 6 7 8 9 9 9 9 9 9 9 10 10 10 10 10 11 11 11 11 11

Back to chapter