What is expand (m-3+n)(m-3-n) ?

The solution to expand (m-3+n)(m-3-n) is m^2-6m-n^2+9

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expand (m-3+n)(m-3-n)

expand

(m - 3 + n) (m - 3 - n)

m^{2} - 6 m - n^{2} + 9

Solution steps

(m - 3 + n) (m - 3 - n)

Distribute parentheses

= mm + m (- 3) + m (- n) - 3 m - 3 (- 3) - 3 (- n) + nm + n (- 3) + n (- n)

Simplify

mm + m (- 3) + m (- n) - 3 m - 3 (- 3) - 3 (- n) + nm + n (- 3) + n (- n) : m^{2} - 6 m - n^{2} + 9

= m^{2} - 6 m - n^{2} + 9

- 4 (a + 3)

- 3 \frac{1}{2} - (- 4 \frac{1}{4})

- 6 x - 4

(i)^{5}

(- 20)^{0}

What is expand (m-3+n)(m-3-n) ?
The solution to expand (m-3+n)(m-3-n) is m^2-6m-n^2+9