Please help me and we should use laws of exponents​

Which expression is equivalent to 2x^2+2x-4/2x^2-4x+2

Reinel saves 30% of every pay check. his paycheck last week was 560$. how much did reniel save last week?

Astandard deck of cards contains 52 cards. one card is selected from the deck. (a) compute the probability of randomly selecting a diamond or heart. (type an integer or a decimal rounded to three decimal places as needed.) (b) compute the probability of randomly selecting a diamond or heart or club. (type an integer or a decimal rounded to three decimal places as needed.) (c) compute the probability of randomly selecting queen or club. (type an integer or a decimal rounded to three decimal places as needed.)