What is expand (s+1-700pij)(s+1+700pij) ?

The solution to expand (s+1-700pij)(s+1+700pij) is s^2+2s-490000pi^2j^2+1

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expand (s+1-700pij)(s+1+700pij)

expand

(s + 1 - 700 πj) (s + 1 + 700 πj)

s^{2} + 2 s - 490000 π^{2} j^{2} + 1

Solution steps

(s + 1 - 700 πj) (s + 1 + 700 πj)

Distribute parentheses

= ss + s \cdot 1 + s \cdot 700 πj + 1 \cdot s + 1 \cdot 1 + 1 \cdot 700 πj + (- 700 πj) s + (- 700 πj) \cdot 1 + (- 700 πj) \cdot 700 πj

Apply minus-plus rules

+ (- a) = - a

= ss + 1 \cdot s + 700 πj s + 1 \cdot s + 1 \cdot 1 + 1 \cdot 700 πj - 700 πj s - 700 \cdot 1 πj - 700 \cdot 700 ππjj

Simplify

ss + 1 \cdot s + 700 πj s + 1 \cdot s + 1 \cdot 1 + 1 \cdot 700 πj - 700 πj s - 700 \cdot 1 πj - 700 \cdot 700 ππjj : s^{2} + 2 s - 490000 π^{2} j^{2} + 1

= s^{2} + 2 s - 490000 π^{2} j^{2} + 1

(x^{2} y - x) d y

(y^{'} (x) + y) (2 x + 2)

- 2^{- 2} + 4

4^{2} + (- 2^{2}) + 5

\frac{( x + 4 ) ( x + 6 )}{40}

What is expand (s+1-700pij)(s+1+700pij) ?
The solution to expand (s+1-700pij)(s+1+700pij) is s^2+2s-490000pi^2j^2+1