Add the algebraic expressions x²+x-2 and 2x²-5x+7​

What’s the numerical coefficient of 6xy

Which describes the difference between the graph of f(x)=x^2 and g(x)=-(x^2-2)

Acourt reporter is transcribing an accident report from germany. the report states that the driver was traveling 80 kilometers per hour. how many miles per hour was the driver traveling?