R²-8r-3=-10

Solve by square root, r equals 1

10 is the answer

hope this help tell me if you get the question right or wrong

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!