Solve -7sqrt(9)-7sqrt(9)-7sqrt(9)-7sqrt(9)-7sqrt(9)+21sqrt(9) | Equatix - Math Solver

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Example

3(r+2s)=2t-4

a⋅(b-2)=3b

3(r+2s)=2t-4

a⋅(b-2)=3b

Question

$$-7 \sqrt{ 9 } -7 \sqrt{ 9 } -7 \sqrt{ 9 } -7 \sqrt{ 9 } -7 \sqrt{ 9 } +21 \sqrt{ 9 }$$

Evaluate

$-42$

Solution Steps

Calculate the square root of $9$ and get $3$.

$$-7\times 3-7\sqrt{9}-7\sqrt{9}-7\sqrt{9}-7\sqrt{9}+21\sqrt{9}$$

Multiply $-7$ and $3$ to get $-21$.

$$-21-7\sqrt{9}-7\sqrt{9}-7\sqrt{9}-7\sqrt{9}+21\sqrt{9}$$

Calculate the square root of $9$ and get $3$.

$$-21-7\times 3-7\sqrt{9}-7\sqrt{9}-7\sqrt{9}+21\sqrt{9}$$

Multiply $-7$ and $3$ to get $-21$.

$$-21-21-7\sqrt{9}-7\sqrt{9}-7\sqrt{9}+21\sqrt{9}$$

Subtract $21$ from $-21$ to get $-42$.

$$-42-7\sqrt{9}-7\sqrt{9}-7\sqrt{9}+21\sqrt{9}$$

Calculate the square root of $9$ and get $3$.

$$-42-7\times 3-7\sqrt{9}-7\sqrt{9}+21\sqrt{9}$$

Multiply $-7$ and $3$ to get $-21$.

$$-42-21-7\sqrt{9}-7\sqrt{9}+21\sqrt{9}$$

Subtract $21$ from $-42$ to get $-63$.

$$-63-7\sqrt{9}-7\sqrt{9}+21\sqrt{9}$$

Calculate the square root of $9$ and get $3$.

$$-63-7\times 3-7\sqrt{9}+21\sqrt{9}$$

Multiply $-7$ and $3$ to get $-21$.

$$-63-21-7\sqrt{9}+21\sqrt{9}$$

Subtract $21$ from $-63$ to get $-84$.

$$-84-7\sqrt{9}+21\sqrt{9}$$

Calculate the square root of $9$ and get $3$.

$$-84-7\times 3+21\sqrt{9}$$

Multiply $-7$ and $3$ to get $-21$.

$$-84-21+21\sqrt{9}$$

Subtract $21$ from $-84$ to get $-105$.

$$-105+21\sqrt{9}$$

Calculate the square root of $9$ and get $3$.

$$-105+21\times 3$$

Multiply $21$ and $3$ to get $63$.

$$-105+63$$

Add $-105$ and $63$ to get $-42$.

$$-42$$

Factor

$-42$