Complete the identity. sin^4x - cos^4x = ?

Y=4x^2+x-1 solve using quadratic formula

Carl is hanging pictures in his home. there is a space on a wall that has a width of 4 feet. carl has pictures with different widths. which picture width would fit in the space on the wall? a. 46 inches b. 60 inches c. 50 inches d. 54 inches

1/2+1/6-3/4 simplify the given expression leaving the answer in improper fraction form.