Solved on Feb 22, 2024

Use the product rule to simplify and find the values of 45×424^{5} \times 4^{2}, (2)2×(2)4×(2)(-2)^{2} \times(-2)^{4} \times(-2), 23×22×222^{3} \times 2^{2} \times 2^{2}, and (34)3×(34)3\left(\frac{3}{4}\right)^{3} \times\left(\frac{3}{4}\right)^{3}.

STEP 1

Assumptions
1. We will use the product rule of exponents which states that am×an=am+na^m \times a^n = a^{m+n}.
2. We will simplify each expression using the product rule.
3. After simplifying, we will calculate the value of each expression.

STEP 2

Simplify the expression 45×424^{5} \times 4^{2} using the product rule.
45×42=45+24^{5} \times 4^{2} = 4^{5+2}

STEP 3

Calculate the exponent.
45+2=474^{5+2} = 4^{7}

STEP 4

Find the value of 474^{7}.
47=4×4×4×4×4×4×44^{7} = 4 \times 4 \times 4 \times 4 \times 4 \times 4 \times 4

STEP 5

Calculate the value.
47=163844^{7} = 16384

STEP 6

Simplify the expression (2)2×(2)4×(2)(-2)^{2} \times(-2)^{4} \times(-2) using the product rule.
(2)2×(2)4×(2)=(2)2+4+1(-2)^{2} \times(-2)^{4} \times(-2) = (-2)^{2+4+1}

STEP 7

Calculate the exponent.
(2)2+4+1=(2)7(-2)^{2+4+1} = (-2)^{7}

STEP 8

Find the value of (2)7(-2)^{7}.
(2)7=2×2×2×2×2×2×2(-2)^{7} = -2 \times -2 \times -2 \times -2 \times -2 \times -2 \times -2

STEP 9

Calculate the value.
(2)7=128(-2)^{7} = -128

STEP 10

Simplify the expression 23×22×222^{3} \times 2^{2} \times 2^{2} using the product rule.
23×22×22=23+2+22^{3} \times 2^{2} \times 2^{2} = 2^{3+2+2}

STEP 11

Calculate the exponent.
23+2+2=272^{3+2+2} = 2^{7}

STEP 12

Find the value of 272^{7}.
27=2×2×2×2×2×2×22^{7} = 2 \times 2 \times 2 \times 2 \times 2 \times 2 \times 2

STEP 13

Calculate the value.
27=1282^{7} = 128

STEP 14

Simplify the expression (34)3×(34)3\left(\frac{3}{4}\right)^{3} \times\left(\frac{3}{4}\right)^{3} using the product rule.
(34)3×(34)3=(34)3+3\left(\frac{3}{4}\right)^{3} \times\left(\frac{3}{4}\right)^{3} = \left(\frac{3}{4}\right)^{3+3}

STEP 15

Calculate the exponent.
(34)3+3=(34)6\left(\frac{3}{4}\right)^{3+3} = \left(\frac{3}{4}\right)^{6}

STEP 16

Find the value of (34)6\left(\frac{3}{4}\right)^{6}.
(34)6=(34)×(34)×(34)×(34)×(34)×(34)\left(\frac{3}{4}\right)^{6} = \left(\frac{3}{4}\right) \times \left(\frac{3}{4}\right) \times \left(\frac{3}{4}\right) \times \left(\frac{3}{4}\right) \times \left(\frac{3}{4}\right) \times \left(\frac{3}{4}\right)

STEP 17

Calculate the value.
(34)6=(7294096)\left(\frac{3}{4}\right)^{6} = \left(\frac{729}{4096}\right)

STEP 18

Summarize the final values for each expression.
a) 45×42=163844^{5} \times 4^{2} = 16384 c) (2)2×(2)4×(2)=128(-2)^{2} \times(-2)^{4} \times(-2) = -128 b) 23×22×22=1282^{3} \times 2^{2} \times 2^{2} = 128 d) (34)3×(34)3=7294096\left(\frac{3}{4}\right)^{3} \times\left(\frac{3}{4}\right)^{3} = \frac{729}{4096}

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