Solve for the Expression: (5×6×7/9)^(2x+1)

Question

Insert the corresponding expression:

(5×6×79)2x+1= \left(\frac{5\times6\times7}{9}\right)^{2x+1}=

Video Solution

Solution Steps

00:00 Simplify the following problem
00:03 According to the power laws, a fraction raised to the power (N)
00:08 equals the numerator and denominator raised to the same power (N)
00:12 Note that the power contains an addition operation
00:15 We will apply this formula to our exercise
00:21 According to the power laws when a product is raised to the power (N)
00:24 it is equal to each factor in the product separately raised to the same power (N)
00:29 We will apply this formula to our exercise
00:39 This is the solution

Step-by-Step Solution

Let's solve the problem step-by-step:

We begin with the expression: (5×6×79)2x+1 \left(\frac{5 \times 6 \times 7}{9}\right)^{2x+1} .

Step 1: Apply the exponent to both the numerator and the denominator using the rule (ab)n=anbn\left(\frac{a}{b}\right)^n = \frac{a^n}{b^n}.

This gives: (5×6×7)2x+192x+1 \frac{(5 \times 6 \times 7)^{2x+1}}{9^{2x+1}} , as in choice b.

Step 2: Distribute the exponent across each factor in the numerator: (a×b×c)n=an×bn×cn (a \times b \times c)^n = a^n \times b^n \times c^n .

This results in: 52x+1×62x+1×72x+192x+1 \frac{5^{2x+1} \times 6^{2x+1} \times 7^{2x+1}}{9^{2x+1}} .

Therefore, the expression (5×6×79)2x+1\left(\frac{5\times6\times7}{9}\right)^{2x+1} evaluates to:

52x+1×62x+1×72x+192x+1 \frac{5^{2x+1} \times 6^{2x+1} \times 7^{2x+1}}{9^{2x+1}} .

This corresponds to choice 1. Hence, choices a' and b' are equivalent.

The correct answer is: a'+b' are correct.

Answer

a'+b' are correct