What are the solutions of the quadratic equation below?

4x2 - 30x + 45 = 0

5× 1/2 = ? a) more than 5 because you are multiplying by a whole number b) 5/10 because you multiply the numerator and denominator by 5 c) less than 5 because you are multiplying by a number that is more than 1 d) less than 5 because you are multiplying by a number that is less than 1

If square root x = -7, then x= -49 true or false

Iknow the answer but the calculator doesn't seem to give the right one