1.1 1-2x3, 2.1.2 sqrt(16+23), 2.1.3 [-12/-3 x (-2)2] + cbrt(11+16)

March 17, 2026Mathematics

ScanSolve AI Answer

March 17, 2026

Answer

2.1

Step 1: Given expression
$21 - 1 \times 3$

Step 2: Perform multiplication first
$1 \times 3 = 3$
Substitute:
$21 - 3$

Step 3: Perform subtraction
$21 - 3 = 18$

2.12

Step 1: Given expression
$\sqrt{4} + 2^{2}$

Step 2: Evaluate square root
$\sqrt{4} = 2$
Evaluate exponent
$2^{2} = 4$

Step 3: Add the results
$2 + 4 = 6$

2.13

Step 1: Given expression
$\sqrt[3]{-8} + \sqrt[3]{18}$

Step 2: Evaluate first cube root
$\sqrt[3]{-8} = -2$
(since $(-2)^3 = -8$ )

Step 3: Second cube root remains
$\sqrt[3]{18}$

Step 4: Add the results
$-2 + \sqrt[3]{18}$

-2 + \sqrt[3]{18}

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2.1 Step 1: Given expression 21 - 1 × 3 Step 2: Perform multiplication first 1 × 3 = 3 Substitute: 21 - 3 Step 3: Perform subtraction 21 - 3 = 18 18 2.12 Step 1: Given expression sqrt(4) + 2^2 Step 2: Evaluate square root sqrt(4) = 2 Evaluate exponent…

Asked on March 17, 2026Mathematics

This mathematics problem involves applying core mathematical principles and formulas. Below you will find a complete step-by-step solution with detailed explanations for each step, helping you understand not just the answer but the method behind it.

ScanSolve AI AnswerAnswered on March 17, 2026

2.1 Step 1: Given expression 21 - 1 × 3 Step 2: Perform multiplication first 1 × 3 = 3 Substitute: 21 - 3 Step 3: Perform subtraction 21 - 3 = 18 18 2.12 Step 1: Given expression sqrt(4) + 2^2 Step 2: Evaluate square root sqrt(4) = 2 Evaluate exponent 2^2 = 4 Step 3: Add the results 2 + 4 = 6 6 2.13 Step 1: Given expression [3]-8 + [3]18 Step 2: Evaluate first cube root [3]-8 = -2 (since (-2)^3 = -8) Step 3: Second cube root remains [3]18 Step 4: Add the results -2 + [3]18 -2 + [3]18