Question

What is the answer to (z+1)(z+2)

Answer 1

Explanation:

(z+1)(z+2) = z²+2z+z+2 =z²+3z+2

Answer 2

z^1+3z+2

Explanation:

(z+1)(z+1)

Multiply each term in the first parenthesis by each term in the second parenthesis

Z x z+2z+z+2

Calculate the product

z^2 +2z+z+2

collect like terms

z^2+3z+2

2z+z

If a term doesnt have a coefficient it is considered that the coefficient is 1

2z+1z

(2+1)z

(2+1)z

3z

z^2+3z+2