Si a = -1, b = 2 y c = 3, determine el valor de las siguientes expresiones: a) ab=

Let w=23 . what is the value of w + 45 ?

Can someone me with this problem . show your work .

Daniel expanded the expression as shown below -2(-8x-4y+3/4)=-10x-8y-11/4 what errors did he make? check all that apply