What is expand (a+b-1)(a+b+1) ?

The solution to expand (a+b-1)(a+b+1) is a^2+2ab+b^2-1

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expand (a+b-1)(a+b+1)

expand

(a + b - 1) (a + b + 1)

a^{2} + 2 ab + b^{2} - 1

Solution steps

(a + b - 1) (a + b + 1)

Distribute parentheses

= aa + ab + a \cdot 1 + ba + bb + b \cdot 1 - 1 \cdot a - 1 \cdot b - 1 \cdot 1

Simplify

aa + ab + a \cdot 1 + ba + bb + b \cdot 1 - 1 \cdot a - 1 \cdot b - 1 \cdot 1 : a^{2} + 2 ab + b^{2} - 1

= a^{2} + 2 ab + b^{2} - 1

- \frac{3}{2} - \frac{3}{2}

- 3 x^{2} y^{3} (x^{3} - y^{2})

y (x - 3) - x + 3

x^{2} + 3^{2}

(9 - 81) (- 1064)

What is expand (a+b-1)(a+b+1) ?
The solution to expand (a+b-1)(a+b+1) is a^2+2ab+b^2-1