Im struggling with stupid math problems and i need
x^2-4y+4x-xy
if anyone can , plz meh

Is every rectangle is a parallelogram? true false

Nick and nora are married and have three children in college. they have an adjusted gross income of 47,400. if their standard deduction is 12,600 itemized deductions are 14,200 and they get an exemption of 4000 for each adult and each dependent what is their taxable income

Find the area of the triangle formed by the origin and the points of intersection of parabolas y=−3x^2+20 and y=x^2−16.