Question

+50 points quiz from keanuariels:
Find the value of x in the following equations!
(a) (1/x) = (2/4)
(b) x² = 81
(c) 9x³ = 576
(d) x² + 9x = 22
(e) 7x = 6x - 9

Answer 1

Answer:

Option (B)

Solution

From CAT 2017 – Quantitative Aptitude – Algebra – Polynomials, we can see that,

9^(2x-1) – 9^(2x-2) = 1944

It can be written as 3^(4x)/9 – 3^(4x)/81 = 1944

8(3^(4x)/81) = 1944

x =9/4

Option (B)

Step-by-step explanation:

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Answer 2

Answer:

answers:-

a _. x=2

b_. x=9

c_. x=4

d_x=11 and x=_2

e: x=--9