2/3x=-4
susan bought a calculator for $ 120 she paid a sales tax of 10 % on the price. how much change would she recieve from $ 140?
(y-x)(z-x)(z-y)=z²(y-x)+y²(x-z)+x²(z-y)
Form a partial differential equation by eliminating the function φ from lx + my + nz = φ(x^2 + y^2 + z^2).
8-(-14)+(-9)+8+(-10)+7
8-(-14)+(-9)+8+(-10)=7
$x^2+14xy+24y^2$
$x^2+2xy+y^2$
x^2+14xy +x24y^2
+8--14+-9+8+-10+7
