Please help b² + 4
when b = 3

13

Step-by-step explanation:

replace b with 3 and solve:

3² + 4 = 13

answer: what do you mean

the rocket cannot penetrate the ground, in a contextual sense, therefore the roots of this equation should be the domain of this function. i'll let you find the roots of this quadratic equation (hint: use the quadratic formula:  

1- c

2-a

step-by-step explanation:

mark brainliest!