Q177 of 196 Page 249

Find x.

We know that, when the bases of the terms are same and those terms are divided, then their exponents are subtracted.

So,

As the bases are same so the exponents can be equated,

⇒ -5 + 7 = -x

⇒ x = -2

175

By what number should (–15)^–1 be divided so that the quotient maybe equal to (–5)^–1?

176

By what number should (–8)^–3 be multiplied so that that the product may be equal to (–6)^–3?

177

Find x.

177

Find x.

2^x + 2^x + 2^x = 192