Woo Jin is solving the following equation for x. 7- 4x = x + 3
His first few steps are given below.
(7 – 4x)2 = (Vx+3)
49 – 56x + 16x2 = x + 3
Is it necessary for Woo Jin to check his answers for extraneous solutions?

26

step-by-step explanation:

the answer is:

the correct option:

b.

to solve the problem, we need to remember how to operate to simplify exponential expressions using the logarithms.

we are given the equation:

then, using placing logarith with base 7 on both sides of the equation, we have:

so, rounding the obtained result to two decimal places (nearest hundreth), we have:

hence, we have that the correct option:

b.

have a nice day!