18z plus 45 plus z^2
*My addition sign is not working*
z^2 + 18z + 45
two factors of 45 are 3 and 15, which add up to 18. So you have
(z+3)(z+15)
If your addition sign is not working, you can still simplify the expression by following these steps:
1. Combine like terms: In the given expression, the terms involving 'z' are 18z and z^2. Since there are no other terms with just 'z', we can add these terms together: 18z + z^2.
2. To simplify further, you can rewrite the expression in standard form, which means arranging the terms in descending order of powers of 'z': z^2 + 18z.
Please note that the addition sign plays a crucial role in combining the terms, so it would be recommended to use a functioning addition sign for accurate calculations.