Evaluate 23 × 20 + 2⁻²

Step 1: Evaluate the exponents. Any non-zero number raised to the power of 0 is 1. 2³ = 2 × 2 × 2 = 8; 2⁰ = 1 Step 2: Substitute the evaluated exponents back into the expression. The expression becomes: 8 × 1 + 2 − 2 Step 3: Perform the multiplication. 8 × 1 = 8 Step 4: Perform the addition and subtraction from left to right. 8 + 2 − 2 = 10 − 2 = 8 The final answer is 8.

Evaluate 23 × 20 + 2⁻²

Step 1: Evaluate the exponents. Any non-zero number raised to the power of 0 is 1. 2³ = 2 × 2 × 2 = 8; 2⁰ = 1 Step 2: Substitute the evaluated exponents back into the expression. The expression becomes: 8 × 1 + 2 − 2 Step 3: Perform the multiplication. 8 × 1 = 8 Step 4: Perform the addition and subtraction from left to right. 8 + 2 − 2 = 10 − 2 = 8 The final answer is 8.

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Evaluate 23 x 20 + 2⁻²

September 9, 2026Mathematics

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Answer

8

Step-by-step solution

4 steps

Evaluate the exponents.
Any non-zero number raised to the power of 0 is 1.
$2^3 = 2 \times 2 \times 2 = 8$ $2^0 = 1$
Substitute the evaluated exponents back into the expression.
The expression becomes:
$8 \times 1 + 2 - 2$
Perform the multiplication.
$8 \times 1 = 8$
Perform the addition and subtraction from left to right.
$8 + 2 - 2 = 10 - 2 = 8$
The final answer is 8.

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