There are 10 doses. 4x5=20/2=10
<span>(3x-4)+(x+3)^2
= 3x - 4 + x^2 + 6x + 9 .........(expand using (a+b)^2 = a^2 + 2ab + b^2)
= x^2 + 9x + 5 ..........(combine like terms and simplify)
hope that helps</span>
Answer:
manda una foto pls es que no me deja ver lo que has puesto
Step-by-step explanation: