What is longmult 20\times 20 ?

The solution to longmult 20\times 20 is 400

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longmult 20\times 20

long multiplication

20 \cdot 20

400

Solution steps

20 \cdot 20

Line up the numbers

\times 2200

Multiply the top number by the bottom number one digit at a time starting with the ones digit (from right to left)

Multiply the top number by the bolded digit of the bottom number

\times 2200

Mutliply the bold numbers:

0 \cdot 0 = 0

\frac{\times 2 2 0 0}{0}

Mutliply the bold numbers:

2 \cdot 0 = 0

\frac{\times 2 2 0 0}{0 0}

Multiply the top number by the bolded digit of the bottom number

\frac{\times 2 2 0 0}{0 0}

Mutliply the bold numbers:

0 \cdot 2 = 0

\frac{\times 2 2 0 0}{0 0 0}

Mutliply the bold numbers:

2 \cdot 2 = 4

\frac{\times 2 2 0 0}{4 0 0 0}

Add the rows to get the answer. For simplicity, fill in trailing zeros

\frac{\times 2 2 0 0}{0 4 0 0 0 0}

0 + 400 = 400

= 400

x^{4} + 3 x^{2} + 4

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(8 x^{4} + 2 x^{2} - 1) + (3 x^{3} - 5 x^{2} + 7 x + 1)

\frac{3 π}{10} \cdot \frac{π}{π}

(2 x - 3) (3 x + 4)