Insert the corresponding expression:
(95×6×7)2x+1=
Let's solve the problem step-by-step:
We begin with the expression: (95×6×7)2x+1.
Step 1: Apply the exponent to both the numerator and the denominator using the rule (ba)n=bnan.
This gives: 92x+1(5×6×7)2x+1, as in choice b.
Step 2: Distribute the exponent across each factor in the numerator: (a×b×c)n=an×bn×cn.
This results in: 92x+152x+1×62x+1×72x+1.
Therefore, the expression (95×6×7)2x+1 evaluates to:
92x+152x+1×62x+1×72x+1.
This corresponds to choice 1. Hence, choices a' and b' are equivalent.
The correct answer is: a'+b' are correct.