the earth is 150 million km. the radius of the sun is 700,000 how many suns would have to line up side by side to reach from the sun to the earth

Rewrite the following without an exponent. (5/8)-1

How to use order of operation in 20 divide by 4 multiply 5 = 1

Hell . what are the solutions to `10x^2 - 38x - 8 = 0`? is this when i find the factors and use the numbers within the factors to determine the zeros? i hope that made sense lol