How many real solutions does each equation have? Enter "0", "1", or "2".

8x2 – 10x + 15 = 0

2x2 – 8x – 1 = 0

–x2 + 12x – 36 = 0

Which expression is equivalent to 2x^2+7x+4?

Planning for the possibility that your home might get struck by lighting and catch on fire is part of a plan

Offering 30 if a plus b plus c equals 68 and ab plus bc plus ca equals 1121, where a, b, and c are all prime numbers, find the value of abc. the answer is 1978 but i need an explanation on how to get that.