How to solve 645 imes645

1. Factor the equation (x + 2)(x + 3) = 0. 2. Set each factor equal to zero: x + 2 = 0 and x + 3 = 0. 3. Solve for x: x = -2 and x = -3.

Solve 645\times645 | Equatix

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Question

$$645 \times 645$$

Evaluate

$416025$

Steps For Long Multiplication

First line up the numbers vertically and match the places from the right like this.

$$\begin{array}{c}\phantom{\times999}645\\\underline{\times\phantom{999}645}\\\end{array}$$

Now multiply the first number with the $1^{st}$ digit in $2^{nd}$ number to get intermediate results. That is Multiply 645 with 5. Write the result 3225 at the end leaving 0 spaces to the right like this.

$$\begin{array}{c}\phantom{\times999}645\\\underline{\times\phantom{999}645}\\\phantom{\times99}3225\\\end{array}$$

Now multiply the first number with the $2^{nd}$ digit in $2^{nd}$ number to get intermediate results. That is Multiply 645 with 4. Write the result 2580 at the end leaving 1 spaces to the right like this.

$$\begin{array}{c}\phantom{\times999}645\\\underline{\times\phantom{999}645}\\\phantom{\times99}3225\\\phantom{\times9}2580\phantom{9}\\\end{array}$$

Now multiply the first number with the $3^{rd}$ digit in $2^{nd}$ number to get intermediate results. That is Multiply 645 with 6. Write the result 3870 at the end leaving 2 spaces to the right like this.

$$\begin{array}{c}\phantom{\times999}645\\\underline{\times\phantom{999}645}\\\phantom{\times99}3225\\\phantom{\times9}2580\phantom{9}\\\underline{\phantom{\times}3870\phantom{99}}\\\end{array}$$

Now add the intermediate results to get final answer.

$$\begin{array}{c}\phantom{\times999}645\\\underline{\times\phantom{999}645}\\\phantom{\times99}3225\\\phantom{\times9}2580\phantom{9}\\\underline{\phantom{\times}3870\phantom{99}}\\\phantom{\times}416025\end{array}$$

Show Solution

Factor

$3^{2}\times 5^{2}\times 43^{2}$